Shailesh Chandrasekharan
Professor of Physics
Prof. Chandrasekharan is interested in understanding quantum field theories non-perturbatively from first principles calculations. His research focuses on lattice formulations of these theories with emphasis on strongly correlated fermionic systems of interest in condensed matter, particle and nuclear physics. He develops novel Monte-Carlo algorithms to study these problems. He is particularly excited about solutions to the notoriously difficult sign problem
that haunts quantum systems containing fermions and gauge fields. He has proposed an idea called the fermion bag approach
, using which he has been able to solve numerous sign problems that seemed unsolvable earlier. Using various algorithmic advances over the past decade, he is interested in understanding the properties of quantum critical points containing interacting fermions. Some of his recent publications can be found here
. Recently he is exploring how one can use quantum computers to solve quantum field theories.
Current Research Interests
I am interested in strongly correlated quantum phenomena that arise naturally in nuclei, dense nuclear systems, quantum anti-ferromagnets, high Tc materials etc. I develop novel quantum Monte Carlo techniques to solve simplified microscopic lattice models that are expected to capture the important physics in these physical phenomena. I am particularly fascinated by quantum critical phenomena that can occur in such models where the details of the microscopic models are no longer important and the answers one gets are universal and more broadly applicable. My goal is to compute these universal properties without approximations where possible. One of my expertise is in the area of solving sign problems that hinder Monte Carlo methods when applied to such systems.
Current Appointments & Affiliations
- Professor of Physics, Physics, Trinity College of Arts & Sciences 2018
Contact Information
- Box 90305, Durham, NC 27708-0305
- Science Drive, 253, Physics/Math Bldg., Durham, NC 27708
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(919) 667-5300
- Background
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Education, Training, & Certifications
- Ph.D., Columbia University 1996
- M.Phil., Columbia University 1994
- M.A., Columbia University 1992
- B.S.E.E., Indian Institute of Technology (India) 1989
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Duke Appointment History
- Director of Graduate Studies of Physics, Physics, Trinity College of Arts & Sciences 2019
- Associate Professor of Physics, Physics, Trinity College of Arts & Sciences 2005 - 2018
- Director of Graduate Studies in the Department of Physics, Physics, Trinity College of Arts & Sciences 2011 - 2014
- Assistant Professor of Physics, Physics, Trinity College of Arts & Sciences 1998 - 2004
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Leadership & Clinical Positions at Duke
- Chair, Executive Committee of Graduate Faculty, from July 2014 to June 2015
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Academic Positions Outside Duke
- Visiting Scientist, Indian Institute of Science, Bangalore India. 2016
- Visiting Professor, Tata Institute for Fundamental Research, Bombay India. 2009
- Visiting Professor, Bern University, Bern Switzerland. 2007
- Visiting Professor, Bern University, Bern Switzerland. 2002
- Recognition
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In the News
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MAY 31, 2015 News Letter of the Open Science Grid -
APR 1, 2014 Duke Research Blog
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Awards & Honors
- Expertise
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Subject Headings
- Research
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Selected Grants
- Lattice and Effective Field Theory Studies of Quantum Chromodynamics awarded by Department of Energy 2005 - 2021
- Quantum Field Theory as Spin Models on Quantum Computers awarded by Los Alamos National Laboratory 2019 - 2020
- Coherence and Correlations in Electronic Nanostructures awarded by National Science Foundation 2005 - 2009
- Coherence and Correlation in Electronic Nanostructures awarded by National Science Foundation 2001 - 2006
- Toward the Chiral Limit in QCD awarded by Department of Energy 2003 - 2005
- Quantum Chromodynamics and Nuclear Physics at Extreme Energy Density awarded by Department of Energy 1995 - 2005
- Publications & Artistic Works
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Selected Publications
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Academic Articles
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Frank, J., E. Huffman, and S. Chandrasekharan. “Emergence of Gauss' law in a Z2 lattice gauge theory in 1 + 1 dimensions.” Physics Letters, Section B: Nuclear, Elementary Particle and High Energy Physics 806 (July 10, 2020). https://doi.org/10.1016/j.physletb.2020.135484.Full Text
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Huffman, E., and S. Chandrasekharan. “Fermion-bag inspired Hamiltonian lattice field theory for fermionic quantum criticality.” Physical Review D 101, no. 7 (April 1, 2020). https://doi.org/10.1103/PhysRevD.101.074501.Full Text
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Singh, H., and S. Chandrasekharan. “Qubit regularization of the O (3) sigma model.” Physical Review D 100, no. 5 (September 17, 2019). https://doi.org/10.1103/PhysRevD.100.054505.Full Text
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Banerjee, Debasish, Shailesh Chandrasekharan, Domenico Orlando, and Susanne Reffert. “Conformal Dimensions in the Large Charge Sectors at the O(4) Wilson-Fisher Fixed Point.” Physical Review Letters 123, no. 5 (August 2019): 051603. https://doi.org/10.1103/physrevlett.123.051603.Full Text
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Singh, H., and S. Chandrasekharan. “Few-body physics on a spacetime lattice in the worldline approach.” Physical Review D 99, no. 7 (April 1, 2019). https://doi.org/10.1103/PhysRevD.99.074511.Full Text
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Ayyar, V., S. Chandrasekharan, and J. Rantaharju. “Benchmark results in the 2D lattice Thirring model with a chemical potential.” Physical Review D 97, no. 5 (March 1, 2018). https://doi.org/10.1103/PhysRevD.97.054501.Full Text
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Banerjee, Debasish, Shailesh Chandrasekharan, and Domenico Orlando. “Conformal Dimensions via Large Charge Expansion.” Physical Review Letters 120, no. 6 (February 2018): 061603. https://doi.org/10.1103/physrevlett.120.061603.Full Text
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Ayyar, V., and S. Chandrasekharan. “Generating a nonperturbative mass gap using Feynman diagrams in an asymptotically free theory.” Physical Review D 96, no. 11 (December 1, 2017). https://doi.org/10.1103/PhysRevD.96.114506.Full Text
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Huffman, E., and S. Chandrasekharan. “Fermion bag approach to Hamiltonian lattice field theories in continuous time.” Physical Review D 96, no. 11 (December 1, 2017). https://doi.org/10.1103/PhysRevD.96.114502.Full Text
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Hann, C. T., E. Huffman, and S. Chandrasekharan. “Solution to the sign problem in a frustrated quantum impurity model.” Annals of Physics 376 (January 1, 2017): 63–75. https://doi.org/10.1016/j.aop.2016.11.006.Full Text
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Huffman, Emilie, and Shailesh Chandrasekharan. “Solution to sign problems in models of interacting fermions and quantum spins.” Physical Review. E 94, no. 4–1 (October 19, 2016): 043311. https://doi.org/10.1103/physreve.94.043311.Full Text
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Ayyar, V., and S. Chandrasekharan. “Fermion masses through four-fermion condensates.” Journal of High Energy Physics 2016, no. 10 (October 1, 2016). https://doi.org/10.1007/JHEP10(2016)058.Full Text
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Huffman, E., D. Banerjee, S. Chandrasekharan, and U. J. Wiese. “Real-time evolution of strongly coupled fermions driven by dissipation.” Annals of Physics 372 (September 1, 2016): 309–19. https://doi.org/10.1016/j.aop.2016.05.019.Full Text
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Ayyar, V., and S. Chandrasekharan. “Origin of fermion masses without spontaneous symmetry breaking.” Physical Review D 93, no. 8 (April 20, 2016). https://doi.org/10.1103/PhysRevD.93.081701.Full Text
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Ayyar, V., and S. Chandrasekharan. “Massive fermions without fermion bilinear condensates.” Physical Review D Particles, Fields, Gravitation and Cosmology 91, no. 6 (March 30, 2015). https://doi.org/10.1103/PhysRevD.91.065035.Full Text
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Zou, H., Y. Liu, C. Y. Lai, J. Unmuth-Yockey, L. P. Yang, A. Bazavov, Z. Y. Xie, et al. “Progress towards quantum simulating the classical O(2) model.” Physical Review a Atomic, Molecular, and Optical Physics 90, no. 6 (December 1, 2014). https://doi.org/10.1103/PhysRevA.90.063603.Full Text
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Huffman, E. F., and S. Chandrasekharan. “Solution to sign problems in half-filled spin-polarized electronic systems.” Physical Review B Condensed Matter and Materials Physics 89, no. 11 (March 12, 2014). https://doi.org/10.1103/PhysRevB.89.111101.Full Text
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Chandrasekharan, S. “Fermion bags and a new origin for a fermion mass.” Proceedings of Science Part F130500 (January 1, 2014).Open Access Copy
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Chandrasekharan, S., and A. Li. “Quantum critical behavior in three dimensional lattice Gross-Neveu models.” Physical Review D Particles, Fields, Gravitation and Cosmology 88, no. 2 (July 31, 2013). https://doi.org/10.1103/PhysRevD.88.021701.Full Text
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Chandrasekharan, Shailesh. “Fermion bag approach to fermion sign problems.” The European Physical Journal A 49, no. 7 (July 2013). https://doi.org/10.1140/epja/i2013-13090-y.Full Text
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Chandrasekharan, S. “Solutions to sign problems in lattice Yukawa models.” Physical Review D Particles, Fields, Gravitation and Cosmology 86, no. 2 (July 3, 2012). https://doi.org/10.1103/PhysRevD.86.021701.Full Text
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Chandrasekharan, S., and A. Li. “Fermion bag solutions to some sign problems in four-fermion field theories.” Physical Review D Particles, Fields, Gravitation and Cosmology 85, no. 9 (May 22, 2012). https://doi.org/10.1103/PhysRevD.85.091502.Full Text
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Chandrasekharan, Shailesh, and Anyi Li. “Fermion bags, duality, and the three dimensional massless lattice thirring model.” Physical Review Letters 108, no. 14 (April 5, 2012): 140404. https://doi.org/10.1103/physrevlett.108.140404.Full Text
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Chandrasekharan, S. “Fermion bag solutions to sign problems.” Proceedings of Science Part F130497 (January 1, 2012). https://doi.org/10.22323/1.164.0224.Full Text
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Chandrasekharan, S., and A. Li. “Fermion bag approach to the sign problem in strongly coupled lattice QED with Wilson fermions.” Journal of High Energy Physics 2011, no. 1 (January 1, 2011). https://doi.org/10.1007/JHEP01(2011)018.Full Text
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Chandrasekharan, S., and A. Li. “The generalized fermion-bag approach.” Proceedings of Science 139 (January 1, 2011).
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Liu, Dong E., Shailesh Chandrasekharan, and Harold U. Baranger. “Quantum phase transition and emergent symmetry in a quadruple quantum dot system.” Physical Review Letters 105, no. 25 (December 13, 2010): 256801. https://doi.org/10.1103/physrevlett.105.256801.Full Text
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Liu, D. E., S. Chandrasekharan, and H. U. Baranger. “Conductance of quantum impurity models from quantum monte carlo.” Physical Review B Condensed Matter and Materials Physics 82, no. 16 (October 28, 2010). https://doi.org/10.1103/PhysRevB.82.165447.Full Text Open Access Copy
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Chandrasekharan, S. “Fermion bag approach to lattice field theories.” Physical Review D Particles, Fields, Gravitation and Cosmology 82, no. 2 (July 14, 2010). https://doi.org/10.1103/PhysRevD.82.025007.Full Text Open Access Copy
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Banerjee, D., and S. Chandrasekharan. “Finite size effects in the presence of a chemical potential: A study in the classical nonlinear O(2) sigma model.” Physical Review D Particles, Fields, Gravitation and Cosmology 81, no. 12 (June 8, 2010). https://doi.org/10.1103/PhysRevD.81.125007.Full Text Open Access Copy
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Chandrasekharan, S., and A. Li. “Anomaly and a QCD-like phase diagram with massive bosonic baryons.” Journal of High Energy Physics 2010, no. 12 (January 1, 2010). https://doi.org/10.1007/JHEP12(2010)021.Full Text
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Podolsky, D., S. Chandrasekharan, and A. Vishwanath. “Phase transitions of S=1 spinor condensates in an optical lattice.” Physical Review B Condensed Matter and Materials Physics 80, no. 21 (December 9, 2009). https://doi.org/10.1103/PhysRevB.80.214513.Full Text Open Access Copy
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Kaul, R. K., D. Ullmo, G. Zaránd, S. Chandrasekharan, and H. U. Baranger. “Ground state and excitations of quantum dots with magnetic impurities.” Physical Review B Condensed Matter and Materials Physics 80, no. 3 (August 6, 2009). https://doi.org/10.1103/PhysRevB.80.035318.Full Text
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Chandrasekharan, S., F. J. Jiang, M. Pepe, and U. J. Wiese. “Rotor spectra, berry phases, and monopole fields: From antiferromagnets to QCD.” Physical Review D Particles, Fields, Gravitation and Cosmology 78, no. 7 (October 21, 2008). https://doi.org/10.1103/PhysRevD.78.077901.Full Text
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Cecile, D. J., and S. Chandrasekharan. “Role of the σ resonance in determining the convergence of chiral perturbation theory.” Physical Review D Particles, Fields, Gravitation and Cosmology 77, no. 9 (May 5, 2008). https://doi.org/10.1103/PhysRevD.77.091501.Full Text
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Cecile, D. J., and S. Chandrasekharan. “Absence of vortex condensation in a two dimensional fermionic XY model.” Physical Review D Particles, Fields, Gravitation and Cosmology 77, no. 5 (March 20, 2008). https://doi.org/10.1103/PhysRevD.77.054502.Full Text
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Jiang, F. J., M. Nyfeler, S. Chandrasekharan, and U. J. Wiese. “From an antiferromagnet to a valence bond solid: Evidence for a first-order phase transition.” Journal of Statistical Mechanics: Theory and Experiment 2008, no. 2 (February 1, 2008). https://doi.org/10.1088/1742-5468/2008/02/P02009.Full Text
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Cecile, D. J., and S. Chandrasekharan. “Modeling pion physics in the -regime of two-flavor QCD using strong coupling lattice QED.” Physical Review D Particles, Fields, Gravitation and Cosmology 77, no. 1 (January 17, 2008). https://doi.org/10.1103/PhysRevD.77.014506.Full Text
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Cecile, D. J., and Shailesh Chandrasekharan. “Sigma-resonance and convergence of chiral perturbation theory.” Pos LATTICE2008 (2008).Link to Item
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Chandrasekharan, S. “A new computational approach to lattice quantum field theories.” Proceedings of Science 66 (January 1, 2008).
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Chandrasekharan, Shailesh, and Abhijit C. Mehta. “Effects of the anomaly on the two-flavor QCD chiral phase transition.” Physical Review Letters 99, no. 14 (October 5, 2007): 142004. https://doi.org/10.1103/physrevlett.99.142004.Full Text
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Lee, J. W., S. Chandrasekharan, and H. U. Baranger. “Disorder-Induced Superfluidity in Hardcore Bosons in Two Dimensions.” Phys. Rev. B, 2007.Link to Item
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Podolsky, D., U. C. Berkeley, S. Chandrasekharan, A. Vishwanath, and L. B. L. Berkeley. “Novel transitions in S=1 spinor condensates and XY Ashkin-Teller universality.” Arxiv:0707.0695 [Cond Mat.Stat Mech], 2007.
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Chandrasekharan, Shailesh. “Anomalous superfluidity in (2+1)-dimensional two-color lattice QCD.” Physical Review Letters 97, no. 18 (November 2006): 182001. https://doi.org/10.1103/physrevlett.97.182001.Full Text
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Priyadarshee, Anand, Shailesh Chandrasekharan, Ji-Woo Lee, and Harold U. Baranger. “Quantum phase transitions of hard-core bosons in background potentials.” Physical Review Letters 97, no. 11 (September 13, 2006): 115703. https://doi.org/10.1103/physrevlett.97.115703.Full Text
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Chandrasekharan, S., and F. J. Jiang. “Phase diagram of two-color lattice QCD in the chiral limit.” Physical Review D Particles, Fields, Gravitation and Cosmology 74, no. 1 (July 14, 2006). https://doi.org/10.1103/PhysRevD.74.014506.Full Text
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Kaul, Ribhu K., Gergely Zaránd, Shailesh Chandrasekharan, Denis Ullmo, and Harold U. Baranger. “Spectroscopy of the Kondo problem in a box.” Physical Review Letters 96, no. 17 (May 3, 2006): 176802. https://doi.org/10.1103/physrevlett.96.176802.Full Text
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Chandrasekharan, S. “New approaches to strong coupling lattice QCD.” Int. J. Mod. Phys. B20 (2006): 2714–23.
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Chandrasekharan, S., and A. C. Mehta. “Effects of the anomaly on the QCD chiral phase transition.” Proceedings of Science 32 (January 1, 2006).
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Yoo, J., S. Chandrasekharan, R. K. Kaul, D. Ullmo, and H. U. Baranger. “On the sign problem in the Hirsch-Fye algorithm for impurity problems.” Journal of Physics A: Mathematical and General 38, no. 48 (December 2, 2005): 10307–10. https://doi.org/10.1088/0305-4470/38/48/004.Full Text
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Kaul, R. K., D. Ullmo, S. Chandrasekharan, and H. U. Baranger. “Mesoscopic Kondo problem.” Europhysics Letters 71, no. 6 (September 15, 2005): 973–79. https://doi.org/10.1209/epl/i2005-10184-1.Full Text
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Lee, J. W., S. Chandrasekharan, and H. U. Baranger. “Quantum Monte Carlo study of disordered fermions.” Physical Review B Condensed Matter and Materials Physics 72, no. 2 (July 1, 2005). https://doi.org/10.1103/PhysRevB.72.024525.Full Text
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Yoo, Jaebeom, Shailesh Chandrasekharan, and Harold U. Baranger. “Multilevel algorithm for quantum-impurity models.” Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics 71, no. 3 Pt 2B (March 31, 2005): 036708. https://doi.org/10.1103/physreve.71.036708.Full Text
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Chandrasekharan, Shailesh, and Costas G. Strouthos. “Failure of mean field theory at large N.” Physical Review Letters 94, no. 6 (February 14, 2005): 061601. https://doi.org/10.1103/physrevlett.94.061601.Full Text
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Chandrasekharan, S., and F. J. Jiang. “Chiral limit of 2-color QCD at strong couplings.” Proceedings of Science 20 (January 1, 2005).
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Yoo, J., S. Chandrasekharan, R. K. Kaul, D. Ullmo, and H. U. Baranger. “Cluster algorithms for quantum impurity models and mesoscopic Kondo physics.” Physical Review B Condensed Matter and Materials Physics 71, no. 20 (January 1, 2005). https://doi.org/10.1103/PhysRevB.71.201309.Full Text
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Chandrasekharan, S., and U. J. Wiese. “An introduction to chiral symmetry on the lattice.” Progress in Particle and Nuclear Physics 53, no. 2 (October 1, 2004): 373–418. https://doi.org/10.1016/j.ppnp.2004.05.003.Full Text
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Brower, R., S. Chandrasekharan, S. Riederer, and U. J. Wiese. “D-theory: Field quantization by dimensional reduction of discrete variables.” Nuclear Physics B 693, no. 1–3 (August 16, 2004): 149–75. https://doi.org/10.1016/j.nuclphysb.2004.06.007.Full Text
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Chandrasekharan, S. “Chiral and critical in strong coupling QCD.” Nuclear Physics B Proceedings Supplements 129–130 (January 1, 2004): 578–80. https://doi.org/10.1016/S0920-5632(03)02647-1.Full Text
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Chandrasekharan, S., M. Pepe, F. D. Steffen, and U. J. Wiese. “Lattice theories with nonlinearly realized chiral symmetry.” Nuclear Physics B Proceedings Supplements 129–130 (January 1, 2004): 507–9. https://doi.org/10.1016/S0920-5632(03)02624-0.Full Text
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Chandrasekharan, S., and C. G. Strouthos. “Connecting lattice QCD with chiral perturbation theory at strong coupling.” Physical Review D Particles, Fields, Gravitation and Cosmology 69, no. 9 (January 1, 2004): 5. https://doi.org/10.1103/PhysRevD.69.091502.Full Text
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Chandrasekharan, S., J. Cox, J. C. Osborn, and U. J. Wiese. “Meron-cluster approach to systems of strongly correlated electrons.” Nuclear Physics B 673, no. 3 (December 1, 2003): 405–36. https://doi.org/10.1016/j.nuclphysb.2003.08.041.Full Text
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Chandrasekharan, S., M. Pepe, F. D. Steffen, and U. J. Wiese. “Nonlinear realization of chiral symmetry on the lattice.” Journal of High Energy Physics 7, no. 12 (December 1, 2003): 831–63. https://doi.org/10.1088/1126-6708/2003/12/035.Full Text
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Chandrasekharan, S., and C. G. Strouthos. “Kosterlitz-Thouless universality in dimer models.” Physical Review D 68, no. 9 (December 1, 2003). https://doi.org/10.1103/PhysRevD.68.091502.Full Text
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Chandrasekharan, S., and F. J. Jiang. “Chiral limit of strongly coupled lattice QCD at finite temperatures.” Physical Review D 68, no. 9 (December 1, 2003). https://doi.org/10.1103/PhysRevD.68.091501.Full Text
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Adams, D. H., and S. Chandrasekharan. “Chiral limit of strongly coupled lattice gauge theories.” Nuclear Physics B 662, no. 1–2 (July 7, 2003): 220–46. https://doi.org/10.1016/S0550-3213(03)00350-X.Full Text
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Brower, R., S. Chandrasekharan, J. W. Negele, and U. J. Wiese. “QCD at fixed topology.” Physics Letters, Section B: Nuclear, Elementary Particle and High Energy Physics 560, no. 1–2 (May 8, 2003): 64–74. https://doi.org/10.1016/S0370-2693(03)00369-1.Full Text
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Brower, R., S. Chandrasekharan, J. W. Negele, and U. J. Wiese. “LATTICE QCD AT FIXED TOPOLOGY.” Phys. Lett. B 560 (2003): 64–74.
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Chandrasekharan, S. “Chiral limit of staggered fermions at strong couplings: A loop representation.” Nuclear Physics B Proceedings Supplements 119 (January 1, 2003): 929–31. https://doi.org/10.1016/S0920-5632(03)01722-5.Full Text
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Chandrasekharan, S. “Connections between quantum chromodynamics and condensed matter physics.” Pramana Journal of Physics 61, no. 5 (January 1, 2003): 901–10. https://doi.org/10.1007/BF02704458.Full Text
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Chandrasekharan, S., M. Pepe, F. D. Steffen, and U. -. J. Wiese. “Nonlinear realization of chiral symmetry on the lattice.” Journal of High Energy Physics 7, no. 12 (2003): 831–63.
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Chandrasekharan, S. “Unexpected results in the chiral limit with staggered fermions.” Physics Letters, Section B: Nuclear, Elementary Particle and High Energy Physics 536, no. 1–2 (May 30, 2002): 72–78. https://doi.org/10.1016/S0370-2693(02)01816-6.Full Text
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Brower, R., S. Chandrasekharan, J. W. Negele, and U. J. Wiese. “Physical observables from lattice QCD at fixed topology.” Nuclear Physics B Proceedings Supplements 106–107 (March 1, 2002): 581–83. https://doi.org/10.1016/S0920-5632(01)01784-4.Full Text
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Chandrasekharan, S. “Superconductivity and chiral symmetry breaking with fermion clusters.” Nuclear Physics B Proceedings Supplements 106–107 (March 1, 2002): 1025–27. https://doi.org/10.1016/S0920-5632(01)01917-X.Full Text
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Chandrasekharan, S., B. Scarlet, and U. J. Wiese. “From spin ladders to the 2D O(3) model at non-zero density.” Computer Physics Communications 147, no. 1–2 (January 1, 2002): 388–93. https://doi.org/10.1016/S0010-4655(02)00311-9.Full Text
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Chandrasekharan, S., and J. C. Osborn. “Kosterlitz-Thouless universality in a Fermionic system.” Physical Review B Condensed Matter and Materials Physics 66, no. 4 (January 1, 2002): 1–5. https://doi.org/10.1103/PhysRevB.66.045113.Full Text
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Chandrasekharan, S., and J. C. Osborn. “Kosterlitz-Thouless universality in a fermionic system.” Physical Review B Condensed Matter and Materials Physics 66, no. 4 (2002): 451131–35.
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Alford, M., S. Chandrasekharan, J. Cox, and U. J. Wiese. “Solution of the complex action problem in the Potts model for dense QCD.” Nuclear Physics B 602, no. 1–2 (May 21, 2001): 61–86. https://doi.org/10.1016/S0550-3213(01)00068-2.Full Text
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Chandrasekharan, S. “QCD at a finite density of static quarks.” Nuclear Physics B Proceedings Supplements 94, no. 1–3 (March 1, 2001): 71–78. https://doi.org/10.1016/S0920-5632(01)00936-7.Full Text
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Chandrasekharan, S., V. Chudnovsky, B. Schlittgen, and U. J. Wiese. “Flop transitions in cuprate and color superconductors: From SO(5) to SO(10) unification?” Nuclear Physics B Proceedings Supplements 94, no. 1–3 (March 1, 2001): 449–52. https://doi.org/10.1016/S0920-5632(01)01002-7.Full Text
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Chandrasekharan, S., and J. Osborn. “Solving sign problems with meron algorithms.” Edited by D. P. Landau, S. P. Lewis, and H. B. Schuttler. Computer Simulation Studies in Condensed Matter Physics Xiii 86 (January 1, 2001): 28–42.Link to Item
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Chandrasekharan, S., and J. C. Osborn. “Critical behavior of a chiral condensate with a meron cluster algorithm.” Physics Letters, Section B: Nuclear, Elementary Particle and High Energy Physics 496, no. 1–2 (December 21, 2000): 122–28. https://doi.org/10.1016/S0370-2693(00)01294-6.Full Text
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Chandrasekharan, S., J. Cox, K. Holland, and U. J. Wiese. “Meron-cluster simulation of a chiral phase transition with staggered fermions.” Nuclear Physics B 576, no. 1–3 (June 12, 2000): 481–500. https://doi.org/10.1016/S0550-3213(00)00087-0.Full Text
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Chandrasekharan, S. “A chiral phase transition using a fermion cluster algorithm.” Chinese Journal of Physics 38, no. 3 (June 1, 2000): 696–706.Link to Item
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Chandrasekharan, S. “Fermion cluster algorithms.” Nuclear Physics B Proceedings Supplements 83–84, no. 1–3 (January 1, 2000): 774–76. https://doi.org/10.1016/s0920-5632(00)00418-7.Full Text
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Brower, R., S. Chandrasekharan, and U. J. Wiese. “QCD as a quantum link model.” Physical Review D Particles, Fields, Gravitation and Cosmology 60, no. 9 (November 1, 1999): 1–14.
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Chandrasekharan, S. “Ginsparg-Wilson fermions: A study in the Schwinger model.” Physical Review D Particles, Fields, Gravitation and Cosmology 59, no. 9 (March 23, 1999). https://doi.org/10.1103/PhysRevD.59.094502.Full Text
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Bhattacharya, T., S. Chandrasekharan, R. Gupta, W. Lee, and S. Sharpe. “Non-perturbative renormalization constants using Ward identities.” Nuclear Physics B Proceedings Supplements 73, no. 1–3 (January 1, 1999): 276–78. https://doi.org/10.1016/S0920-5632(99)85046-4.Full Text
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Bhattacharya, T., S. Chandrasekharan, R. Gupta, W. Lee, and S. Sharpe. “Non-perturbative renormalization constants using Ward identities 1.” Physics Letters, Section B: Nuclear, Elementary Particle and High Energy Physics 461, no. 1–2 (January 1, 1999): 79–88. https://doi.org/10.1016/S0370-2693(99)00796-0.Full Text
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Brower, R. “QCD as a quantum link model.” Physical Review D Particles, Fields, Gravitation and Cosmology 60, no. 9 (January 1, 1999). https://doi.org/10.1103/PhysRevD.60.094502.Full Text
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Brower, R., S. Chandrasekharan, and U. J. Wiese. “QCD as a quantum link model.” Physical Review D 60, no. 9 (1999).
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Chandrasekharan, S. “Lattice QCD with Ginsparg-Wilson fermions.” Physical Review D Particles, Fields, Gravitation and Cosmology 60, no. 7 (January 1, 1999). https://doi.org/10.1103/PhysRevD.60.074503.Full Text
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Chandrasekharan, S. “Confinement, chiral symmetry breaking and continuum limits in quantum link models.” Nuclear Physics B Proceedings Supplements 73, no. 1–3 (January 1, 1999): 739–41. https://doi.org/10.1016/S0920-5632(99)85189-5.Full Text
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Chandrasekharan, S. “Lattice QCD with Ginsparg-Wilson fermions.” Physical Review D Particles, Fields, Gravitation and Cosmology 60, no. 7 (1999): 1–6.
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Chandrasekharan, S. “Ginsparg-Wilson fermions: A study in the Schwinger model.” Physical Review D Particles, Fields, Gravitation and Cosmology 59, no. 9 (1999): 1–8.
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Chandrasekharan, S., D. Chen, N. Christ, W. Lee, R. Mawhinney, and P. Vranas. “Anomalous chiral symmetry breaking above the QCD phase transition.” Physical Review Letters 82, no. 12 (January 1, 1999): 2463–66. https://doi.org/10.1103/PhysRevLett.82.2463.Full Text
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Chandrasekharan, S., and U. J. Wiese. “Meron-cluster solution of fermion sign problems.” Physical Review Letters 83, no. 15 (January 1, 1999): 3116–19. https://doi.org/10.1103/PhysRevLett.83.3116.Full Text
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Brower, R., S. Chandrasekharan, and U. J. Wiese. “Green's functions from quantum cluster algorithms.” Physica A: Statistical Mechanics and Its Applications 261, no. 3–4 (December 15, 1998): 520–33. https://doi.org/10.1016/S0378-4371(98)00325-2.Full Text
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Beard, B. B., R. C. Brower, S. Chandrasekharan, D. Chen, A. Tsapalis, and U. J. Wiese. “D-theory: Field theory via dimensional reduction of discrete variables.” Nuclear Physics B Proceedings Supplements 63, no. 1–3 (January 1, 1998): 775–89. https://doi.org/10.1016/S0920-5632(97)00900-6.Full Text
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Brower, R., S. Chandrasekharan, and U. -. J. Wiese. “Green’s functions from quantum cluster algorithms11This work is supported in part by funds provided by the US Department of Energy (DOE) under cooperative research agreement DE-FC02-94ER40818.” 261, no. 3 (1998): 520–33.
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Orginos, K., W. Bietenholz, R. Brower, S. Chandrasekharan, and U. J. Wiese. “The perfect Quark-Gluon vertex function.” Nuclear Physics B Proceedings Supplements 63, no. 1–3 (January 1, 1998): 904–6. https://doi.org/10.1016/S0920-5632(97)00936-5.Full Text
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Bietenholz, W., R. Brower, S. Chandrasekharan, and U. J. Wiese. “Perfect lattice topology: The quantum rotor as a test case.” Physics Letters, Section B: Nuclear, Elementary Particle and High Energy Physics 407, no. 3–4 (September 4, 1997): 283–89. https://doi.org/10.1016/S0370-2693(97)00742-9.Full Text
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Bietenholz, W., R. Brower, S. Chandrasekharan, and U. J. Wiese. “Perfect lattice actions for staggered fermions.” Nuclear Physics B 495, no. 1–2 (June 23, 1997): 285–305. https://doi.org/10.1016/S0550-3213(97)00195-8.Full Text
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Chandrasekharan, S., and U. J. Wiese. “Quantum link models: A discrete approach to gauge theories.” Nuclear Physics B 492, no. 1–2 (May 12, 1997): 455–71. https://doi.org/10.1016/S0550-3213(97)80041-7.Full Text
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Chandrasekharan, S. “A large N chiral transition on a plaquette.” Physics Letters, Section B: Nuclear, Elementary Particle and High Energy Physics 395, no. 1–2 (March 6, 1997): 83–88. https://doi.org/10.1016/S0370-2693(97)00050-6.Full Text
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Bietenholz, W., R. Brower, S. Chandrasekharan, and U. J. Wiese. “Progress on perfect lattice actions for QCD.” Nuclear Physics B Proceedings Supplements 53, no. 1–3 (January 1, 1997): 921–34. https://doi.org/10.1016/S0920-5632(96)00818-3.Full Text
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Chandrasekharan, S., and S. Huang. “Z3 twisted chiral condensates in QCD at finite temperatures.” Physical Review. D, Particles and Fields 53, no. 9 (May 1996): 5100–5104. https://doi.org/10.1103/physrevd.53.5100.Full Text
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Chandrasekharan, S., and N. Christ. “Dirac spectrum, axial anomaly and the QCD chiral phase transition.” Nuclear Physics B Proceedings Supplements 47, no. 1–3 (January 1, 1996): 527–34. https://doi.org/10.1016/0920-5632(96)00115-6.Full Text
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Chandrasekharan, S., and S. Huang. “Z3 twisted chiral condensates in QCD at finite temperatures.” Physical Review D Particles, Fields, Gravitation and Cosmology 53, no. 9 (1996): 5100–5104.
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Chandrasekharan, S. “Critical behavior of the chiral condensate at the QCD phase transition.” Nuclear Physics B (Proceedings Supplements) 42, no. 1–3 (January 1, 1995): 475–77. https://doi.org/10.1016/0920-5632(95)00284-G.Full Text
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Chandrasekharan, S. “Anomaly cancellation in 2+1 dimensions in the presence of a domain wall mass.” Physical Review. D, Particles and Fields 49, no. 4 (February 1994): 1980–87. https://doi.org/10.1103/physrevd.49.1980.Full Text
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Chandrasekharan, S. “Fermions with a domain-wall mass: explicit greens function and anomaly cancellation.” Nuclear Physics B (Proceedings Supplements) 34, no. C (January 1, 1994): 579–82. https://doi.org/10.1016/0920-5632(94)90451-0.Full Text
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Chandrasekharan, S., B. Scarlet, and U. -. J. Wiese. “Meron-Cluster Simulation of Quantum Spin Ladders in a Magnetic Field,” n.d.Link to Item
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Chandrasekharan, Shailesh, and Uwe-Jens Wiese. “SO(10) Unification of Color Superconductivity and Chiral Symmetry Breaking?,” n.d.Link to Item
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Chandrasekharan, Shailesh, and Uwe-Jens Wiese. “Partition Functions of Strongly Correlated Electron Systems as "Fermionants",” n.d.Link to Item
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Chandrasekharan, Shailesh. “Novel Quantum Monte Carlo Algorithms for Fermions,” n.d.Link to Item
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Huffman, Emilie, and Shailesh Chandrasekharan. “Solution to new sign problems with Hamiltonian Lattice Fermions.” Pos (Lattice 2014) 058, n.d.Open Access Copy Link to Item
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Digital Publications
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Chandrasekharan, Shailesh, Jernej Frank, and Emilie Huffman. “Emergence of Gauss' Law in a 2 Lattice Gauge Theory.” arXiv.org, April 10, 2019.
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Conference Papers
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Chandrasekharan, Shailesh, Oliver Orasch, Christof Gattringer, and Pascal Torek. “Baryon bag simulation of QCD in the strong coupling limit.” arXiv.org, 2019.Open Access Copy
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Ayyar, V., and S. Chandrasekharan. “Generating a mass gap using Feynman diagrams in an asymptotically free theory.” In Epj Web of Conferences, Vol. 175, 2018. https://doi.org/10.1051/epjconf/201817511010.Full Text
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Singh, H., and S. Chandrasekharan. “Worldline approach to few-body physics on the Lattice.” In Proceedings of Science, Vol. 334, 2018.
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Chandrasekharan, S. “Fermion bags, topology and index theorems.” In Proceedings of Science, Vol. Part F128557, 2016.
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Chandrasekharan, S. “Quantum critical behavior with massless staggered fermions in three dimensions.” In Proceedings of Science, Vol. 29-July-2013, 2013.
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Cecile, D. J., and S. Chandrasekharan. “-Resonance and convergence of chiral perturbation theory.” In Proceedings of Science, Vol. 66, 2008.
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- Teaching & Mentoring
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Recent Courses
- PHYSICS 141D: General Physics I (DIS) 2020
- PHYSICS 141L9: General Physics I (Lab) 2020
- PHYSICS 141L: General Physics I 2020
- PHYSICS 765: Advanced Quantum Mechanics 2020
- PHYSICS 781: Quantum Field Theory 2020
- PHYSICS 493: Research Independent Study 2019
- PHYSICS 781: Quantum Field Theory 2019
- PHYSICS 493: Research Independent Study 2018
- PHYSICS 763: Statistical Mechanics 2018
- PHYSICS 781: Quantum Field Theory 2018
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Advising & Mentoring
- I am currently advising a graduate student Hanqing Liu. I am also co-advising another graduate student Hersh Singh.
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Teaching Activities
- In the last three years I have taught courses that span graduate, advanced undergraduate and freshman level courses. Over the last year I have taught two core graduate level courses, quantum mechanics in the spring of 2017 and statistical mechanics in the fall of 2017. I will be teaching graduate level quantum field theory in the spring 2018. I am also teaching a research course for an undergraduate German exchange student. It mainly focuses on introducing the student to the physics of strongly correlated fermion systems and teaches the necessary background to perform Monte Carlo calculations to solve it.
- Scholarly, Clinical, & Service Activities
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Presentations & Appearances
- Qubit Regularization of Quantum Field Theories. Invited Theoretical Physics Seminar. Brookhaven National Laboratory. September 6, 2019 2019
- Monte Carlo calculations of conformal dimensions of large charge operators. Invited talk at the program on Quantum Mechanical Systems at Large Charge. Simons Center for Geometry and Physics. August 26, 2019 - September 20, 2019 2019
- Building our Universe with Qubits. Physics Colloquium. Tata Institute for Fundamental Research. July 31, 2019 2019
- Conformal dimensions using a large charge expansion. Theoretical Physics Colloquium. Tata Institute for Fundamental Research. July 23, 2019 2019
- Qubit Regularization of Quantum Field Theories. Invited "Free Meson Seminar". Tata Institute for Fundamental Research. July 18, 2019 2019
- Monte Carlo calculations of conformal dimensions of large charge operators. Invited Physics Seminar. Indian Institute of Science. July 5, 2019 2019
- Monte Carlo calculations of conformal dimensions of large charge operators. Invited Physics Seminar. International Center for Theoretical Studies. July 4, 2019 2019
- Conformal dimensions in the large charge sectors at the Wilson-Fisher fixed point using qubit formulations. Invited Condensed Matter Seminar. Perimeter Institute. May 28, 2019 2019
- Conformal dimensions in large charge sectors using “qubit” formulations. Invited talk at the annual workshop on Lattice for Beyond the Standard Model Physics. Syracuse University. May 2, 2019 - May 3, 2019 2019
- Emergence of Gauss’ Law in a Z2 Lattice Gauge Theory. Invited Quantum Many Body Physics Seminar. Simons Flatiron Institute. April 2, 2019 2019
- Qubit formulations of QFT. Invited talk at the meeting on Quantum Computing and Information for Nuclear Physics. Nuclear Physics Quantum Computing Collaboration. January 23, 2019 - January 25, 2019 2019
- Fermionic Quantum Critical Points. Invited Physics Colloquium. UNC Wilmington. October 25, 2018 2018
- Fermion Bag Approach to Fermion Sign Problems. December 21, 2013 2013
- New approaches to finite density lattice field theory. December 20, 2013 2013
- Lattice 2012. December 14, 2012 2012
- New approaches to Strongly Correlated Fermions. November 30, 2012 2012
- Fermion Bag Approach to Lattice Field Theories. October 15, 2012 2012
- Fermion-Bag solutions to Sign Problems. September 21, 2012 2012
- Fermion-Bag solutions to some unsolved sign problems. August 1, 2012 2012
- Fermion Bag Approach to Sign Problems. July 18, 2012 2012
- Solutions to some unsolved sign problems in strongly correlated lattice fermion systems. July 17, 2012 2012
- Solutions to some unsolved sign problems in strongly correlated lattice fermion systems. July 11, 2012 2012
- New solutions to some old sign problems. June 5, 2012 2012
- Fermion-bag approach to four-fermion lattice field theories. June 28, 2011 2011
- Generalized Fermion-bag approach to four-fermion lattice field theories. June 3, 2011 2011
- Fermion bag approach to four-fermion lattice field theories. May 30, 2011 2011
- Fermion bag approach to four-fermion lattice field theories. May 27, 2011 2011
- World Line approach to Lattice Fermions. May 26, 2011 2011
- The Fermion Bag Approach. February 2, 2011 2011
- Quantum Mechanics and the Computational Challenge for the 21st Century. January 24, 2011 2011
- Anomaly and the QCD Critical Point : A study in a strongly correlated system. July 4, 2010 2010
- Quantum Mechanics and the Computational Challenges for the 21st Century. June 30, 2009 2009
- Sigma-Resonance and Chiral Perturbation Theory. May 7, 2009 2009
- World-line approach to lattice field theories. May 6, 2009 2009
- World-line approach to sign problems. March 4, 2009 2009
- World-line approach to lattice field theories. February 26, 2009 2009
- World-line approach to lattice field theories. February 23, 2009 2009
- Sigma-resonance and convergence of chiral perturbation theory. January 13, 2009 2009
- A new approach to computational quantum field theory. December 12, 2008 2008
- APS March Meeting. December 12, 2008 2008
- Fun with four fermion models. December 12, 2008 2008
- Fun with four-fermion Models. December 12, 2008 2008
- LATTICE 2008. December 12, 2008 2008
- Monte Carlo Methods in Lattice Field Theories. December 12, 2008 2008
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Service to the Profession
- Co-Organizer, with Emilie Huffman (Chair) and Ribhi Kaul. Quantum Criticality: Gauge Fields and Matter. Perimeter Institite. May 25, 2020 - May 29, 2020 2020
- Journal Referee. Physical Review Letters, Physical Review D. American Physical Society. 2019 2019
- Co-Chair, Organizing Committee. Diagrammatic Mote Carlo methods in Nuclear, Particle and Condensed Matter Physics.. Mainz Institute for Theoretical Physics (MITP).. September 18, 2017 - September 29, 2017 2017
- Chair, Organizing Committee. International Workshop on the Sign Problem in QCD and Beyond. Institute for Nuclear Theory, Seattle WA. March 20, 2017 - March 24, 2017 2017
- Chair, Organizing Committee. Diagrammatic Mote Carlo methods in Nuclear, Particle and Condensed Matter Physics.. ECT* Trento. October 5, 2015 - October 9, 2015 2015
- Organizer. Understanding Strongly Coupled Systems in High Energy and Condensed Matter Physics . Aspen Center for Physics. May 24, 2015 - June 13, 2015 2015
- Referee : Physica A. 2013 2013
- Reviewer for Swiss National Foundation Grant Proposals. December 15, 2012 2012
- Reviewer for FONDECYT (Chile, NSF). November 2012 2012
- Reviewer for European Research Council Grant Proposal. 2011 2011
- Referee : International Journal for Theoretical Physics. 2010 2010
- Co-Chair : ECT* Workshop titled "Sign Problems and Complex Actions". March 2, 2009 2009
- Referee : Journal of Physics. 2009 2009
- Organizers (Thomas Schaefer (chair), Dean Lee and Shailesh Chandrasekharan) : Extreme QCD 2008. December 12, 2008 2008
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Service to Duke
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Academic & Administrative Activities
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Chair of the Core Course Committee (July - Dec, 2019).
Chair of the Graduate Curriculum Committee (July - Dec, 2019).
Chair of the News and Web Committee (Sep 2018 - Present).
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Chair of the Core Course Committee (July - Dec, 2019).
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