Shailesh Chandrasekharan
Professor of Physics
Prof. Chandrasekharan is interested in understanding quantum field theories nonperturbatively 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 MonteCarlo 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 antiferromagnets, 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 fermion 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 277080305
 Science Drive, 253, Physics/Math Bldg., Durham, NC 27708
 sch27@duke.edu (919) 6675300
 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

Previous Appointments & Affiliations
 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
 Associate, International Center for Theoretical Studies, Bengaluru. 2020  2023
 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 
MAR 31, 2014 Duke Research Blog


Awards & Honors
 Expertise

Subject Headings
 Broken symmetry (Physics)
 Critical phenomena (Physics)
 Field theory (Physics)
 Gauge fields (Physics)
 Monte Carlo Algorithms (physics)
 Particles (Nuclear physics)
 Phase transformations (Statistical physics)
 Quantum Computing (physics)
 Quantum Sign Problems (physics)
 Quasiparticles (Physics)
 Special relativity (Physics)
 Statistical physics
 Symmetry (Physics)
 World line (Physics)

Global Scholarship

Research

 Research

Selected Grants
 Lattice and Effective Field Theory Studies of Quantum Chromodynamics awarded by Department of Energy 2005  2023
 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

External Relationships
 Indian Institute of Science Education and Research Mohali
 International Center for Theoretical Sciences, Bangalore India
 Publications & Artistic Works

Selected Publications

Academic Articles

Zhou, Junzhe, Hersh Singh, Tanmoy Bhattacharya, Shailesh Chandrasekharan, and Rajan Gupta. “Spacetime symmetric qubit regularization of the asymptotically free twodimensional O(4) model.” Physical Review D: Particles, Fields, Gravitation and Cosmology 105, no. 5 (March 21, 2022). https://doi.org/10.1103/PhysRevD.105.054510.Full Text

Liu, Hanqing, Emilie Huffman, Shailesh Chandrasekharan, and Ribhu K. Kaul. “Quantum Criticality of Antiferromagnetism and Superconductivity with Relativity.” Physical Review Letters 128, no. 11 (March 2022): 117202. https://doi.org/10.1103/physrevlett.128.117202.Full Text

Banerjee, D., and S. Chandrasekharan. “Subleading conformal dimensions at the O(4) WilsonFisher fixed point.” Physical Review D 105, no. 3 (February 1, 2022). https://doi.org/10.1103/PhysRevD.105.L031507.Full Text

Liu, H., and S. Chandrasekharan. “Qubit Regularization and Qubit Embedding Algebras.” Symmetry 14, no. 2 (February 1, 2022). https://doi.org/10.3390/sym14020305.Full Text

Bhattacharya, Tanmoy, Alex Buser, Shailesh Chandrasekharan, Rajan Gupta, and Hersh Singh. “Qubit regularization of asymptotic freedom (Submitted).” Physical Review Letters 26, no. 17 (December 3, 2020). https://doi.org/10.1103/PhysRevLett.126.172001.Full Text Link to Item

Liu, Hanqing, Shailesh Chandrasekharan, and Ribhu Kaul. “Hamiltonian models of lattice fermions solvable by the meroncluster algorithm (Submitted).” Physical Review D: Particles, Fields, Gravitation and Cosmology, November 30, 2020.Link to Item

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

Chandrasekharan, Shailesh, and Emilie Huffman. “Fermionbag inspired Hamiltonian lattice field theory for fermionic quantum criticality.” Physical Review D: Particles, Fields, Gravitation and Cosmology 07 (April 2, 2020). https://doi.org/10.1103/PhysRevD.101.074501.Full Text Link to Item

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

Banerjee, Debasish, Shailesh Chandrasekharan, Domenico Orlando, and Susanne Reffert. “Conformal Dimensions in the Large Charge Sectors at the O(4) WilsonFisher Fixed Point.” Physical Review Letters 123, no. 5 (August 2019): 051603. https://doi.org/10.1103/physrevlett.123.051603.Full Text

Singh, H., and S. Chandrasekharan. “Fewbody 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

Orasch, O., S. Chandrasekharan, C. Gattringer, and P. Törek. “Baryon bag simulation of QCD in the strong coupling limit.” Proceedings of Science 363 (January 1, 2019).

“Acknowledgement to Reviewers of Condensed Matter in 2017.” Condensed Matter 3, no. 1 (January 12, 2018): 3–3. https://doi.org/10.3390/condmat3010003.Full Text

Chandrasekharan, S., and Venkitesh Ayyar. “Generating a nonperturbative mass gap using Feynman diagrams in an asymptotically free theory.” Physical Review D Particles, Fields, Gravitation and Cosmology 96 (December 8, 2017). https://doi.org/10.1103/PhysRevD.96.114506.Full Text

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

Ayyar, V., and S. Chandrasekharan. “Fermion masses through fourfermion condensates.” Journal of High Energy Physics 2016, no. 10 (October 1, 2016). https://doi.org/10.1007/JHEP10(2016)058.Full Text

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 2016): 043311. https://doi.org/10.1103/physreve.94.043311.Full Text

Huffman, E., D. Banerjee, S. Chandrasekharan, and U. J. Wiese. “Realtime 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

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

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

Zou, H., Y. Liu, C. Y. Lai, J. UnmuthYockey, 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

Huffman, Emilie, and Shailesh Chandrasekharan. “Solution to new sign problems with Hamiltonian Lattice Fermions.” Pos (Lattice 2014) 058, November 26, 2014.Open Access Copy Link to Item

Huffman, E. F., and S. Chandrasekharan. “Solution to sign problems in halffilled spinpolarized 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

Chandrasekharan, S. “Fermion bags and a new origin for a fermion mass.” Proceedings of Science Part F130500 (January 1, 2014).Open Access Copy

Chandrasekharan, S., and A. Li. “Quantum critical behavior in three dimensional lattice GrossNeveu 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

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/i201313090y.Full Text

Chandrasekharan Shailesh, S. L. “Fermion Bag Solutions to Sign Problems.” Proceedings of Science Lattice2012 (December 2012): 224.

Chandrasekharan Shailesh, W. “Solutions to sign problems in lattice Yukawa models.” Phys. Rev. D 86 (July 2012): 021701. https://doi.org/10.1103/PhysRevD.86.021701.Full Text Link to Item

Chandrasekharan, Shailesh, and Anyi Li. “Fermion bag solutions to some sign problems in fourfermion field theories.” Phys. Rev. D 85 (May 2012): 091502. https://doi.org/10.1103/PhysRevD.85.091502.Full Text Link to Item

Chandrasekharan, Shailesh, and Anyi Li. “Fermion Bags, Duality, and the Three Dimensional Massless Lattice Thirring Model.” Phys. Rev. Lett. 108 (April 2012): 140404. https://doi.org/10.1103/PhysRevLett.108.140404.Full Text Link to Item

Chandrasekharan, S., and A. Li. “The generalized fermion bag approach.” Proceedings of Science Lattice 2011 (December 2011): 058.

Chandrasekharan, Shailesh, and UweJens Wiese. “Partition Functions of Strongly Correlated Electron Systems as "Fermionants",” August 11, 2011.Link to Item

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 018 (2011).Link to Item

Banerjee, D., and S. Chandrasekharan. “Finite size effects in the presence of a chemical potential: A study in the classical nonlinear O(2) sigmamodel.” Physical Review D 81 (2010): 125007.Open Access Copy Link to Item

Chandrasekharan, S. “Fermion bag approach to lattice field theories.” Physical Review D 82 (2010): 025007.Open Access Copy

Chandrasekharan, S., and A. Li. “Anomaly and a QCDlike phase diagram with massive bosonic baryons.” Journal of High Energy Physics 12, no. 021 (2010). https://doi.org/10.1007/JHEP12(2010)021.Full Text Link to Item

Liu, D., S. Chandrasekharan, and H. U. Baranger. “Conductance of quantum impurity models from quantum Monte Carlo.” Physical Review B 82 (2010): 165447.Open Access Copy Link to Item

Liu, D., S. Chandrasekharan, and H. U. Baranger. “Quantum Phase Transition and Dynamically Enhanced Symmetry in Quadruple Quantum Dot System.” Physical Review Letters 105 (2010): 256801.Link to Item

Kaul, R. K., D. Ullmo, G. Zarand, S. Chandrasekharan, and H. U. Baranger. “Ground state and excitations of quantum dots with magnetic impurities.” Phys. Rev. B 80, no. 3 (2009): 035318.Link to Item

Cecile, D. J., and Shailesh Chandrasekharan. “Sigmaresonance and convergence of chiral perturbation theory.” Pos LATTICE2008 (2008): 071.Link to Item

Chandrasekharan, S., F. J. Jiang, M. Pepe, and U. J. Wiese. “{Rotor spectra, Berry phases, and monopole fields: From antiferromagnets to QCD}.” Phys. Rev. D78 (2008): 077901.Link to Item

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.” J. Stat. Mech., 2008, P02009.Link to Item

Cecile, D. J., and S. Chandrasekharan. “Absence of vortex condensation in a two dimensional fermionic XY model.” Phys. Rev. D 77 (2008): 054502.Link to Item

Cecile, D. J., and Shailesh Chandrasekharan. “Role of the sigmaresonance in determining the convergence of chiral perturbation theory.” Phys. Rev. D (Rapid Communications) 77 (2008): 091501.Link to Item

Chandrasekharan Shailesh, C. “{A new computational approach to lattice quantum field theories}.” Pos LATTICE2008 (2008): 003.Link to Item

Cecile, D. J., and S. Chandrasekharan. “Modeling pion physics in the epsilonregime of twoflavor QCD using strong coupling lattice QED.” Phys. Rev. D 77 (2007): 014506.Link to Item

Podolsky, D., U. C. Berkeley, S. Chandrasekharan, A. Vishwanath, and L. B. L. Berkeley. “Novel transitions in S=1 spinor condensates and XY AshkinTeller universality.” Arxiv:0707.0695 [Cond Mat.Stat Mech], 2007.

Podolsky, Daniel, Shailesh Chandrasekharan, and Ashvin Vishwanath. “Phase Transitions of S=1 Spinor Condensates in an Optical Lattice.” Phys. Rev. B. (Accepted), 2007.Open Access Copy Link to Item

Chandrasekharan, S., and Abhijit C. Mehta. “Effects of the anomaly on the twoflavor QCD chiral phase transition.” Physical Review Letters 99 (2007): 142004.Link to Item

Lee, J. W., S. Chandrasekharan, and H. U. Baranger. “DisorderInduced Superfluidity in Hardcore Bosons in Two Dimensions (Submitted).” Phys. Rev. B, 2007.Link to Item

Chandrasekharan, S. “New approaches to strong coupling lattice QCD.” Int. J. Mod. Phys. B20 (2006): 2714–23.

Chandrasekharan, S. “Anomalous Superconductivity in 2+1 dimensional twocolor lattice QCD.” Phys. Rev. Lett. 97 (2006): 182001.Link to Item

Chandrasekharan, S., and A. C. Mehta. “Effects of the anomaly on the QCD chiral phase transition.” Proceedings of Science LAT2006 (2006): 128.Link to Item

Chandrasekharan, S., and F. J. Jiang. “Phase diagram of twocolor lattice QCD in the chiral limit.” Phys. Rev. D 74 (2006): 014506.Link to Item

Chandrasekharan, Shailesh, and FuJiun Jiang. “Chiral limit of 2color QCD at strong couplings.” Pos LAT2005 (2006): 198.Link to Item

Kaul, R. K., G. Zaránd, S. Chandrasekharan, D. Ullmo, and H. U. Baranger. “Spectroscopy of the Kondo Problem in a Box.” Phys.Rev.Lett. 96 (2006): 176802.Link to Item

Priyadarshee, A., S. Chandrasekharan, J. W. Lee, and H. U. Baranger. “Quantum Phase Transitions of HardCore Bosons in Background Potentials.” Phys. Rev. Lett. 97 (2006): 115703.Link to Item

Chandrasekharan, S., and C. G. Strouthos. “Failure of Mean Field Theory at Large N.” Physical Review Letters 94 (2005): 061601.Link to Item

Kaul, R. K., D. Ullmo, S. Chandrasekharan, and H. U. Baranger. “Mesoscopic Kondo Problem.” Europhys. Lett. 71 (2005): 973.Link to Item

Lee, J. W., S. Chandrasekharan, and H. U. Baranger. “Quantum Monte Carlo Study of Disordered Fermions.” Phys. Rev. B 72 (2005): 024525.Link to Item

Yoo, J., S. Chandrasekharan, R. K. Kaul, D. Ullmo, and H. U. Baranger. “On the Sign Problem in the HirschFye Algorithm for Impurity Problems.” J. Phys. A: Math. and General 38 (2005): 10307.Link to Item

Yoo, J., S. Chandrasekharan, R. K. Kaul, D. Ullmo, and H. U. Baranger. “Cluster Algorithms for Quantum Impurity Models and Mesoscopic Kondo Physics.” Phys. Rev. B 71 (2005): 201309(R).Link to Item

Yoo, J., S. Chandrasekharan, and H. U. Baranger. “A Multilevel Algorithm for Quantumimpurity Models.” Phys. Rev. E 71 (2005): 036708.Link to Item

Chandrasekharan, S., and U. J. Wiese. “An introduction to chiral symmetry on the lattice.” Prog. Part. Nucl. Phys. 53 (2004): 373–418.Link to Item

Brower, R., S. Chandrasekharan, S. Riederer, and U. J. Wiese. “D THEORY: FIELD QUANTIZATION BY DIMENSIONAL REDUCTION OF DISCRETE VARIABLES.” Nucl. Phys. B 693 (2004): 149.

Chandrasekharan Shailesh, A. S. “Chiral and critical behavior in strong coupling QCD.” Nucl. Phys. Proc. Suppl. 129 (2004): 578–80.Link to Item

Chandrasekharan, S., M. Pepe, F. D. Steffen, and U. J. Wiese. “Lattice theories with nonlinearly realized chiral symmetry.” Nucl. Phys. Proc. Suppl. 129 (2004): 507–9.Link to Item

Chandrasekharan, S., and C. G. Strouthos. “CONNECTING LATTICE QCD WITH CHIRAL PERTURBATION THEORY AT STRONG COUPLING.” Physical Review (Rapid Communications) D69 (2004): 091502.

Adams, D. H., and S. Chandrasekharan. “CHIRAL LIMIT OF STRONGLY COUPLED LATTICE GAUGE THEORIES.” Nucl. Phys. B 662 (2003): 220–46.

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., 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., and C. Strouthos. “KOSTERLITZTHOULESS UNIVERSALITY IN DIMER MODELS.” Physical Reviews D (Rapid Communications) Arxiv:Hep Lat/0306034 68 (2003): 091502.

Brower, R., S. Chandrasekharan, J. W. Negele, and U. J. Wiese. “QCD at fixed topology.” Phys. Lett. B 560 (2003): 64–74.Link to Item

Chandrasekharan Shailesh, Shailesh. “Chiral limit of staggered fermions at strong couplings: A loop representation.” Nucl. Phys. Proc. Suppl. 119 (2003): 929–31.Link to Item

Chandrasekharan, S. “CONNECTIONS BETWEEN QUANTUM CHROMODYNAMICS AND CONDENSED MATTER PHYSICS.” Pramana 61 (2003): 901.

Chandrasekharan, S., J. Cox, J. C. Osborn, and U. J. Wiese. “MERON CLUSTER APPROACH TO SYSTEMS OF STRONGLY CORRELATED ELECTRONS.” Nucl. Phys. B 673, no. 3 (2003): 405–36.

Chandrasekharan, S., M. Pepe, F. D. Steffen, and U. J. Wiese. “NONLINEAR REALIZATION OF CHIRAL SYMMETRY ON THE LATTICE.” Jhep 0312 (2003): 035.

Chandrasekharan, S., and FuJiun Jiang. “CHIRAL LIMIT OF STRONGLY COUPLED LATTICE QCD AT FINITE TEMPERATURES.” Physical Reviews D (Rapid Communications) 68 (2003): 091501.

Chandrasekharan, S. “UNEXPECTED RESULTS IN THE CHIRAL LIMIT WITH STAGGERED FERMIONS.” Physics Letters B 536 (January 2002): 72.

Brower, R., S. Chandrasekharan, J. W. Negele, and U. J. Wiese. “PHYSICAL OBSERVABLES FROM LATTICE QCD AT FIXED TOPOLOGY.” Nucl. Phys. B (Proc. Suppl.) 106 (2002): 581.

Chandrasekharan Shailesh, Shailesh. “Superconductivity and chiral symmetry breaking with fermion clusters.” Nucl. Phys. Proc. Suppl. 106 (2002): 1025–27.Link to Item

Chandrasekharan, S., B. Scarlet, and U. J. Wiese. “FROM SPIN LADDERS TO THE 2D O(3) MODEL AT NONZERO DENSITY.” Comput. Phys. Commun. 147 (2002): 388.

Chandrasekharan, S., and J. C. Osborn. “KOSTERLITZTHOULESS UNIVERSALITY IN A FERMIONIC SYSTEM.” Physical Review B 66 (2002): 045113.

Chandrasekharan, S., and J. C. Osborn. “KosterlitzThouless universality in a fermionic system.” Physical Review B Condensed Matter and Materials Physics 66, no. 4 (2002): 451131–35.

Chandrasekharan, Shailesh. “Novel Quantum Monte Carlo Algorithms for Fermions,” October 8, 2001.Link to Item

Chandrasekharan, S. “QCD AT A FINITE DENSITY OF STATIC QUARKS.” Nucl. Phys. B (Proc. Suppl.) 94 (2001): 71–78.

Alford, M., S. Chandrasekharan, J. Cox, and U. J. Wiese. “SOLUTION OF THE COMPLEX ACTION PROBLEM IN THE POTTS MODEL FOR DENSE QCD.” Nucl. Phys. B 602 (2001): 61.

Chandrasekharan, S., V. Chudnovski, B. Schlittgen, and U. J. Wiese. “FLOP TRANSITIONS IN CUPRATE AND COLOR SUPERCONDUTORS From SO(5) to SO(10) unification?” Nucl. Phys. B (Proc. Suppl.) 94 (2001): 449.

Chandrasekharan, Shailesh, and UweJens Wiese. “SO(10) Unification of Color Superconductivity and Chiral Symmetry Breaking?,” March 21, 2000.Link to Item

Chandrasekharan Shailesh, B. N. “Fermion cluster algorithms.” Nucl. Phys. Proc. Suppl. 83 (2000): 774–76.Link to Item

Chandrasekharan Shailesh, R. J. “A chiral phase transition using a fermion cluster algorithm.” Chin. J. Phys. 38 (2000): 696–706.Link to Item

Chandrasekharan, S., J. Cox, K. Holland, and U. J. Wiese. “MERON CLUSTER SIMULATION OF A CHIRAL PHASE TRANSITION WITH STAGGERED FERMIONS.” Nucl. Phys. B 576 (2000): 481–500.

Chandrasekharan, S., and J. C. Osborn. “CRITICAL BEHAVIOR OF A CHIRAL CONDENSATE WITH A MERON CLUSTER ALGORITHM.” Phys. Letts. B 496 (2000): 122–28.

Chandrasekharan, Shailesh, and James Osborn. “Solving Sign Problems with Meron Algorithms.” Springer Proc. Phys. 86 (2000): 28–42.

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., B. Scarlet, and U. . J. Wiese. “MeronCluster Simulation of Quantum Spin Ladders in a Magnetic Field,” September 30, 1999.Link to Item

Bhattacharya, T., S. Chandrasekharan, R. Gupta, W. Lee, and S. Sharpe. “NONPERTURBATIVE RENORMALIZATION CONSTANTS USING WARD IDENTITIES.” Phys. Letts. B 461 (1999): 79–88.

Brower, R., S. Chandrasekharan, and U. J. Wiese. “QCD AS A QUANTUM LINK MODEL.” Phys. Rev. D 60 (1999): 094502.

Brower, R., S. Chandrasekharan, and U. J. Wiese. “QCD as a quantum link model.” Physical Review D 60, no. 9 (1999): DUMMY42.

Chandrasekharan, S. “LATTICE QCD WITH GINSPARGWILSON FERMIONS.” Phys. Rev. D 60 (1999): 074503.

Chandrasekharan, S., D. Chen, N. Christ, W. Lee, R. Mawhinney, and P. Vranas. “ANOMALOUS CHIRAL SYMMETRY BREAKING ABOVE THE QCD PHASE TRANSITION.” Phys. Rev. Lett. 82 (1999): 2463–66.

Chandrasekharan, S., and U. J. Wiese. “MERON CLUSTER SOLUTION OF A FERMION SIGN PROBLEM.” Phys. Rev. Letts. 86 (January 1999): 3116–19.

Bhattacharya, Tanmoy, Shailesh Chandrasekharan, Rajan Gupta, WeonJong Lee, and Stephen R. Sharpe. “Nonperturbative renormalization constants using Ward identities.” Nucl. Phys. Proc. Suppl. 73 (1999): 276–78.Link to Item

Chandrasekharan, S. “GINSPARGWILSON FERMIONS: A STUDY IN THE SCHWINGER MODEL.” Phys. Rev. D 59 (1999): 094502.

Chandrasekharan, S. “CONFINEMENT, CHIRAL SYMMETRY BREAKING AND CONTINUUM LIMITS IN QUANTUM LINK MODELS.” Nucl. Phys. B Proc. Suppl. 73 (1999): 739–41.

Chandrasekharan, S. “Lattice QCD with GinspargWilson fermions.” Physical Review D Particles, Fields, Gravitation and Cosmology 60, no. 7 (1999): 1–6.

Chandrasekharan, S. “GinspargWilson fermions: A study in the Schwinger model.” Physical Review D Particles, Fields, Gravitation and Cosmology 59, no. 9 (1999): 1–8.

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 DEFC0294ER40818.” 261, no. 3 (1998): 520–33.

Beard, B. B., R. C. Brower, S. Chandrasekharan, D. Chen, A. Tsapalis, and U. J. Wiese. “DTHEORY: FIELD THEORY VIA DIMENSIONAL REDUCTION OF DISCRETE VARIABLES.” Nucl. Phys. B (Proc. Suppl.) 63 (1998): 775–89.

Brower, R., S. Chandrasekharan, and U. J. Wiese. “GREEN'S FUNCTIONS FROM QUANTUM CLUSTER ALGORITHMS.” Physica A 261 (1998): 520–33.

Orginos, K., W. Bietenholz, R. Brower, S. Chandrasekharan, and U. J. Wiese. “THE PERFECT QUARK GLUON VERTEX FUNCTION.” Nucl. Phys. B (Proc. Suppl.) 63 (1998): 904–6.

Bietenholz, W., R. Brower, S. Chandrasekharan, and U. J. Wiese. “PERFECT LATTICE TOPOLOGY: THE QUANTUM ROTOR AS A TEST CASE.” Phys. Lett. B 407 (1997): 283–89.

Chandrasekharan, S., and U. J. Wiese. “QUANTUM LINK MODELS: A DISCRETE APPROACH TO GAUGE THEORIES.” Nucl. Phys. B 492 (1997): 455–74.

Bietenholz, W., R. Brower, S. Chandrasekharan, and U. J. Wiese. “PERFECT LATTICE ACTIONS FOR STAGGERED FERMIONS.” Nucl. Phys. B 495 (1997): 285–305.

Bietenholz, W., R. Brower, S. Chandrasekharan, and U. J. Wiese. “PROGRESS ON PERFECT LATTICE ACTIONS FOR QCD.” Nucl. Phys. B (Proc. Suppl.) 53 (1997): 921–34.

Chandrasekharan, S. “A LARGE N CHIRAL TRANSITION ON A PLAQUETTE.” Phys. Lett. B 395 (1997): 83–88.

Chandrasekharan, S., and N. Christ. “DIRAC SPECTRUM, AXIAL ANOMALY AND THE QCD CHIRAL PHASE TRANSITION.” Nucl. Phys. B (Proc. Suppl.) 47 (1996): 527–34.

Chandrasekharan, S., and S. Huang. “Z_{3} twisted chiral condensates in QCD at finite temperatures.” Physical Review D Particles, Fields, Gravitation and Cosmology 53, no. 9 (1996): 5100–5104.

Chandrasekharan, S., and Suzhou Huang. “Z(3) TWISTED CHIRAL CONDENSATES IN QCD AT FINITE TEMPERATURES.” Phys. Rev. D 53 (1996): 5100–5104.

Chandrasekharan, S. “CRITICAL BEHAVIOR OF THE CHIRAL CONDENSATE AT THE QCD PHASE TRANSITION.” Nucl. Phys. B (Proc. Suppl.) 42 (1995): 475–77.

Chandrasekharan, S. “ANOMALY CANCELLATION IN (2+1)DIMENSIONS IN THE PRESENCE OF A DOMAIN WALL MASS.” Phys. Rev. D 49 (1994): 1980–87.

Chandrasekharan, S. “FERMIONS WITH A DOMAIN WALL MASS: EXPLICIT GREENS FUNCTION AND ANOMALY CANCELLATION.” Nucl. Phys. B (Proc. Suppl.) 34 (1994): 579–82.

Ayyar, V., S. Chandrasekharan, and J. Rantaharju. “Benchmark results in the 2D lattice Thirring model with a chemical potential,” n.d.Link to Item

Banerjee, D., S. Chandrasekharan, and D. Orlando. “Conformal dimensions via large charge expansion,” n.d.Link to Item

Huffman, E., and S. Chandrasekharan. “Fermion bag approach to Hamiltonian lattice field theories in continuous time.” Physical Review D Particles, Fields, Gravitation and Cosmology, n.d.Link to Item


Conference Papers

Maiti, S., D. Banerjee, S. Chandrasekharan, and M. K. Marinkovic. “Threedimensional GrossNeveu model with two flavors of staggered fermions.” In Proceedings of Science, Vol. 396, 2022.

Chandrasekharan, Shailesh, Oliver Orasch, Christof Gattringer, and Pascal Torek. “Baryon bag simulation of QCD in the strong coupling limit.” In Pos Lattice2019 (2019) 117. Proceedings of Science, 2020.Open Access Copy

Liu, Hanqing, Shailesh Chandrasekharan, and Ribhu Kaul. “Quantum Critical Phenomena in an O(4) Fermion Chain.” In Pos Lattice2019 (2019) 222. Proceedings of Science, 2020.

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

Singh, H., and S. Chandrasekharan. “Worldline approach to fewbody 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. 29July2013, 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 142L9D: General Physics II (Discussion) 2023
 PHYSICS 142L: General Physics II 2023
 PHYSICS 764: Quantum Mechanics 2023
 PHYSICS 765: Advanced Quantum Mechanics 2023
 PHYSICS 764: Quantum Mechanics 2022
 PHYSICS 765: Advanced Quantum Mechanics 2022
 PHYSICS 493: Research Independent Study 2021
 PHYSICS 764: Quantum Mechanics 2021
 PHYSICS 765: Advanced Quantum Mechanics 2021
 PHYSICS 791: Special Readings 2021

Advising & Mentoring
 I am currently advising Rui Xian Siew

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
 Qubit Regularization of Quantum Field Theories. City College of New York. November 11, 2022 2022
 Quantum field theories via qubit regularization of lattice spin and gauge models. Bootstrapping Nature: NonPerturbative Approaches to Critical Phenomena. Galileo Galilei Institute. November 4, 2022 2022
 Sign Problems in Few Body Physics in the Worldline Formulation. SIGN2022. Tel Aviv University. September 5, 2022  September 9, 2022 2022
 Building our Universe with Qubits. IMSc Diamond Jubiliee Distinguished Lecture. Institute for Mathematical Sciences. August 12, 2022 2022
 A simple qubit regularization scheme for SU(N) lattice gauge theories. August 1, 2022 2022
 Qubit Regularization: Asymptotic Freedom. Invited Lecture. International Center for Theoretical Sciences. July 25, 2022 2022
 Introductory Lectures on Qubit Regularization. Saha Institute for Nuclear Physics. June 27, 2022  June 28, 2022 2022
 Qubit Regularization, Qubit Embedding Algebra and Asymptotic Freedom. Discrete Lattice Gauge Theories, Emergence and Quantum Simulation. Max Plank Institute. May 9, 2022  May 13, 2022 2022
 Building our Universe with Qubits. Physics Colloquium. Lehigh University. March 24, 2022 2022
 FourFermion Field Theories on the Lattice. Theoretical Seminar. Iowa University. September 13, 2021 2021
 Conformal Dimensions in the SubLeading Large Charge Sector of the O(4) model. QM Systems at Large Quantum Numbers. Bern University. August 30, 2021 2021
 Interacting Massless Dirac Fermions with SpinCharge Flip Symmetry. Relativistic Fermions in Flatland: Theory and Applications. ECT*, Trento Italy. July 5, 2021  July 9, 2021 2021
 Subleading conformal dimensions using qubit regularization of the O(4) model. International Symposium on Lattice Field Theory. Massachusetts Institute of Technology. June 26, 2021  June 30, 2021 2021
 Qubit Regularization: Large Charge CFTs and Asymptotic Freedom. Theoretical Seminar. Bern University. June 10, 2021 2021
 Qubit Regularization and Quantum Links. Quantum Similation for Strong Interactions. Institute for Nuclear Theory, University of Washington, Seattle. April 8, 2021 2021
 Qubit Regularization of Asymptotic Freedom. Nonperturbative and numerical approaches to quantum gravity, string theory and holography. International Center for Theoretical Sciences. January 18, 2021 2021
 Qubit Regularization of Asymptotic Freedom. Theoretical Seminar. Saha Institute for Nuclear Physics. January 14, 2021 2021
 Qubit Regularization of Asymptotic Freedom. Annual Fall DNP of the APS. APS. October 29, 2020  November 1, 2020 2020
 Qubit Regularization of Quantum Field Theories. Nuclear Theory Seminar. Duke University. October 15, 2020  October 15, 2020 2020
 Fermion Bag Methods. January 27, 2020  February 1, 2020 2020
 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 WilsonFisher 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
 FermionBag solutions to Sign Problems. September 21, 2012 2012
 FermionBag 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
 Fermionbag approach to fourfermion lattice field theories. June 28, 2011 2011
 Generalized Fermionbag approach to fourfermion lattice field theories. June 3, 2011 2011
 Fermion bag approach to fourfermion lattice field theories. May 30, 2011 2011
 Fermion bag approach to fourfermion 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
 SigmaResonance and Chiral Perturbation Theory. May 7, 2009 2009
 Worldline approach to lattice field theories. May 6, 2009 2009
 Worldline approach to sign problems. March 4, 2009 2009
 Worldline approach to lattice field theories. February 26, 2009 2009
 Worldline approach to lattice field theories. February 23, 2009 2009
 Sigmaresonance 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 fourfermion Models. December 12, 2008 2008
 LATTICE 2008. December 12, 2008 2008
 Monte Carlo Methods in Lattice Field Theories. December 12, 2008 2008

Service to the Profession
 CoOrganizer, 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
 CoChair, 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
 CoChair : 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

Service to Duke

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).

Chair of the Core Course Committee (July  Dec, 2019).
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