Shailesh Chandrasekharan

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
(919) 660-2462

Background
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
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
Leadership & Clinical Positions at Duke
- Chair, Executive Committee of Graduate Faculty, from July 2014 to June 2015
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
In the News
- MAY 31, 2015 News Letter of the Open Science Grid
  
  Exploring the origins of mass using fermions and the Open Science Grid
- APR 1, 2014 Duke Research Blog
  
  Grad Student Solves 30-Year-Old Physics Problem
Awards & Honors
Expertise
Subject Headings
Research
Selected Grants
- Quantum Field Theory as Spin Models on Quantum Computers awarded by Los Alamos National Laboratory 2019 - 2020
- Lattice and Effective Field Theory Studies of Quantum Chromodynamics awarded by Department of Energy 2005 - 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
Selected Publications
- Academic Articles
  - Chandrasekharan, Shailesh, and Emilie Huffman. “Fermion-bag inspired Hamiltonian lattice field theory for fermionic quantum criticality.” Arxiv:1912.12823, December 30, 2019.
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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.
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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). https://doi.org/10.1103/physrevlett.123.051603.
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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.
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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). https://doi.org/10.1103/physrevlett.120.061603.
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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.
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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.
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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.
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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). https://doi.org/10.1103/physreve.94.043311.
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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.
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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.
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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.
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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.
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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.
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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.
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  - Chandrasekharan, S. “Fermion bags and a new origin for a fermion mass.” Proceedings of Science Part F130500 (January 1, 2014).
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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.
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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.
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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.
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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.
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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). https://doi.org/10.1103/physrevlett.108.140404.
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  - Chandrasekharan, S. “Fermion bag solutions to sign problems.” Proceedings of Science Part F130497 (January 1, 2012).
  - 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.
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  - Chandrasekharan, S., and A. Li. “The generalized fermion-bag approach.” Proceedings of Science 139 (January 1, 2011).
  - 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). https://doi.org/10.1103/physrevlett.105.256801.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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  - Cecile, D. J., and Shailesh Chandrasekharan. “Sigma-resonance and convergence of chiral perturbation theory.” Pos LATTICE2008 (2008).
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  - Chandrasekharan, S. “A new computational approach to lattice quantum field theories.” Proceedings of Science 66 (January 1, 2008).
  - 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). https://doi.org/10.1103/physrevlett.99.142004.
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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.
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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.
  - Chandrasekharan, Shailesh. “Anomalous superfluidity in (2+1)-dimensional two-color lattice QCD..” Physical Review Letters 97, no. 18 (November 2006). https://doi.org/10.1103/physrevlett.97.182001.
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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). https://doi.org/10.1103/physrevlett.97.115703.
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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.
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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). https://doi.org/10.1103/physrevlett.96.176802.
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  - Chandrasekharan, S. “New approaches to strong coupling lattice QCD.” Int. J. Mod. Phys. B20 (2006): 2714–23.
  - Chandrasekharan, S., and A. C. Mehta. “Effects of the anomaly on the QCD chiral phase transition.” Proceedings of Science 32 (January 1, 2006).
  - 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.
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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.
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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.
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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). https://doi.org/10.1103/physreve.71.036708.
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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). https://doi.org/10.1103/physrevlett.94.061601.
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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).
  - 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.
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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.
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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.
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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.
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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.
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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). https://doi.org/10.1103/PhysRevD.69.091502.
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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.
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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.
  - 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.
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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.
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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.
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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.
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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.
  - 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.
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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.
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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.
  - 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.
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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.
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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.
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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.
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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.
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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.
  - 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.
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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.
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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.
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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.
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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.
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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.
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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.
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  - Chandrasekharan, S. “Fermion cluster algorithms.” Nuclear Physics B Proceedings Supplements 83–84, no. 1–3 (January 1, 2000): 774–76.
  - 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.
  - 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.
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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.
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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.
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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.
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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).
  - 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.
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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.
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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.
  - 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.
  - 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.
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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.
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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.
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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.
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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.
  - 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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
  - 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.
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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.
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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.
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  - Ayyar, Venkitesh, Shailesh Chandrasekharan, and Jarno Rantaharju. “Benchmark results in the 2D lattice Thirring model with a chemical potential.” Physical Review D 97, no. 5 (n.d.). https://doi.org/10.1103/physrevd.97.054501.
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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.
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  - Chandrasekharan, Shailesh, and Uwe-Jens Wiese. “SO(10) Unification of Color Superconductivity and Chiral Symmetry Breaking?,” n.d.
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  - Chandrasekharan, Shailesh, and Uwe-Jens Wiese. “Partition Functions of Strongly Correlated Electron Systems as "Fermionants",” n.d.
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  - Chandrasekharan, Shailesh. “Novel Quantum Monte Carlo Algorithms for Fermions,” n.d.
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  - Huffman, Emilie, and Shailesh Chandrasekharan. “Solution to new sign problems with Hamiltonian Lattice Fermions.” Pos (Lattice 2014) 058, n.d.
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- Digital Publications
  - Chandrasekharan, Shailesh, Jernej Frank, and Emilie Huffman. “Emergence of Gauss' Law in a 2 Lattice Gauge Theory.” arXiv.org, April 10, 2019.
- Conference Papers
  - 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
  - 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.
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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.
  - Chandrasekharan, S. “Fermion bags, topology and index theorems.” In Proceedings of Science, Vol. Part F128557, 2016.
  - Chandrasekharan, S. “Quantum critical behavior with massless staggered fermions in three dimensions.” In Proceedings of Science, Vol. 29-July-2013, 2013.
  - Cecile, D. J., and S. Chandrasekharan. “-Resonance and convergence of chiral perturbation theory.” In Proceedings of Science, Vol. 66, 2008.
Teaching & Mentoring
Recent Courses
- PHYSICS 781: Quantum Field Theory 2020
- PHYSICS 493: Research Independent Study 2019
- PHYSICS 763: Statistical Mechanics 2018
Advising & Mentoring
- I am currently advising a graduate student Hanqing Liu. I am also co-advising another graduate student Hersh Singh.
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
Presentations & Appearances
Service to the Profession
Service to Duke
- Chair, Executive Committee of Graduate Faculty. Graduate School. July 2014 - June 2015 2014 - 2015
- Graduate School. Executive Committee of Graduate Faculty. July 2013 - June 2015 2013 - 2015
Academic & Administrative Activities
- 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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