Shailesh Chandrasekharan
Associate Professor of Physics
Prof. Chandrasekharan is interested in understanding quantum field theories nonperturbatively from first principles calculations. His research focuses on lattice formulations 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 recently 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
.
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 sign problems that hinder Monte Carlo methods when applied to such systems.
Current Appointments & Affiliations
 Associate Professor of Physics, Physics, Trinity College of Arts & Sciences 2005
Contact Information
 Box 90305, Durham, NC 277080305
 Science Drive, 253, Physics/math Bldg., Durham, NC 27708
 (919) 6602462
 http://www.phy.duke.edu/~sch/
 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 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 
APR 1, 2014 Duke Research Blog


Awards & Honors
 Expertise

Subject Headings
 Research

Selected Grants
 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

Conference Papers
 Chandrasekharan, S. "Fermion bags, topology and index theorems." January 1, 2016.
 Chandrasekharan, S. "Quantum critical behavior with massless staggered fermions in three dimensions." January 1, 2013.

Journal Articles
 Banerjee, D, Chandrasekharan, S, and Orlando, D. "Conformal Dimensions via Large Charge Expansion." Physical review letters 120, no. 6 (February 2018): 061603. Full Text
 Chandrasekharan, S, and Ayyar, V. "Generating a nonperturbative mass gap using Feynman diagrams in an asymptotically free theory (Published online)." Physical Review D  Particles, Fields, Gravitation and Cosmology 96 (December 8, 2017). Full Text
 Ayyar, V, and Chandrasekharan, S. "Generating a nonperturbative mass gap using Feynman diagrams in an asymptotically free theory." Physical Review D 96, no. 11 (December 1, 2017). Full Text
 Huffman, E, and Chandrasekharan, S. "Fermion bag approach to Hamiltonian lattice field theories in continuous time." Physical Review D 96, no. 11 (December 1, 2017). Full Text
 Hann, CT, Huffman, E, and Chandrasekharan, S. "Solution to the sign problem in a frustrated quantum impurity model." Annals of Physics 376 (January 2017): 6375. Full Text
 Huffman, E, and Chandrasekharan, S. "Solution to sign problems in models of interacting fermions and quantum spins." Physical review. E 94, no. 41 (October 19, 2016): 043311.
 Ayyar, V, and Chandrasekharan, S. "Fermion masses through fourfermion condensates." Journal of High Energy Physics 2016, no. 10 (October 2016). Full Text
 Huffman, E, Banerjee, D, Chandrasekharan, S, and Wiese, UJ. "Realtime evolution of strongly coupled fermions driven by dissipation." Annals of Physics 372 (September 2016): 309319. Full Text
 Ayyar, V, and Chandrasekharan, S. "Origin of fermion masses without spontaneous symmetry breaking." Physical Review D 93, no. 8 (April 2016). Full Text
 Ayyar, V, and Chandrasekharan, S. "Massive fermions without fermion bilinear condensates." Physical Review D 91, no. 6 (March 2015). Full Text
 Zou, H, Liu, Y, Lai, CY, UnmuthYockey, J, Yang, LP, Bazavov, A, Xie, ZY, Xiang, T, Chandrasekharan, S, Tsai, SW, and Meurice, Y. "Progress towards quantum simulating the classical model." Physical Review A 90, no. 6 (December 2014). 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 Shailesh, . "Fermion Bag Solutions to Sign Problems." Proceedings of Science Lattice2012 (December 2012): 224. (Academic Article)
 Chandrasekharan, S, and Li, A. "Fermion bags, duality, and the three dimensional massless lattice thirring model." Phys Rev Lett 108, no. 14 (April 6, 2012): 140404. Full Text Link to Item
 Chandrasekharan, S, and Li, A. "Fermion bag solutions to some sign problems in fourfermion field theories." Physical Review D  Particles, Fields, Gravitation and Cosmology 85, no. 9 (2012). Full Text
 Chandrasekharan, S. "Solutions to sign problems in lattice Yukawa models." Physical Review D  Particles, Fields, Gravitation and Cosmology 86, no. 2 (2012). Full Text
 Chandrasekharan, S, and Li, A. "Fermion bag approach to the sign problem in strongly coupled lattice QED with Wilson fermions." Journal of High Energy Physics 2011, no. 1 (2011). Full Text
 Liu, DE, Chandrasekharan, S, and Baranger, HU. "Quantum phase transition and emergent symmetry in a quadruple quantum dot system." Phys Rev Lett 105, no. 25 (December 17, 2010): 256801. Full Text Link to Item
 Banerjee, D, and Chandrasekharan, S. "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 (2010). Full Text Open Access Copy
 Chandrasekharan, S, and Li, A. "Anomaly and a QCDlike phase diagram with massive bosonic baryons." Journal of High Energy Physics 2010, no. 12 (2010). Full Text
 Chandrasekharan, S. "Fermion bag approach to lattice field theories." Physical Review D  Particles, Fields, Gravitation and Cosmology 82, no. 2 (2010). Full Text Open Access Copy
 Liu, DE, Chandrasekharan, S, and Baranger, HU. "Conductance of quantum impurity models from quantum monte carlo." Physical Review B  Condensed Matter and Materials Physics 82, no. 16 (2010). Full Text Open Access Copy
 Kaul, RK, Ullmo, D, Zaránd, G, Chandrasekharan, S, and Baranger, HU. "Ground state and excitations of quantum dots with magnetic impurities." Physical Review B  Condensed Matter and Materials Physics 80, no. 3 (2009). Full Text
 Podolsky, D, Chandrasekharan, S, and Vishwanath, A. "Phase transitions of S=1 spinor condensates in an optical lattice." Physical Review B  Condensed Matter and Materials Physics 80, no. 21 (2009). Full Text Open Access Copy
 Jiang, FJ, Nyfeler, M, Chandrasekharan, S, and Wiese, UJ. "From an antiferromagnet to a valence bond solid: evidence for a firstorder phase transition." JOURNAL OF STATISTICAL MECHANICSTHEORY AND EXPERIMENT (February 2008). Full Text Link to Item
 Cecile, DJ, and Chandrasekharan, S. "Modeling pion physics in the regime of twoflavor QCD using strong coupling lattice QED." Physical Review D  Particles, Fields, Gravitation and Cosmology 77, no. 1 (2008). Full Text
 Cecile, DJ, and Chandrasekharan, S. "Role of the σ resonance in determining the convergence of chiral perturbation theory." Physical Review D  Particles, Fields, Gravitation and Cosmology 77, no. 9 (2008). Full Text
 Cecile, DJ, and Chandrasekharan, S. "Absence of vortex condensation in a two dimensional fermionic XY model." Physical Review D  Particles, Fields, Gravitation and Cosmology 77, no. 5 (2008). Full Text
 Chandrasekharan, S, Jiang, FJ, Pepe, M, and Wiese, UJ. "Rotor spectra, berry phases, and monopole fields: From antiferromagnets to QCD." Physical Review D  Particles, Fields, Gravitation and Cosmology 78, no. 7 (2008). Full Text
 Jiang, FJ, Nyfeler, M, Chandrasekharan, S, and Wiese, UJ. "From an antiferromagnet to a valence bond solid: Evidence for a firstorder phase transition." Journal of Statistical Mechanics: Theory and Experiment 2008, no. 2 (2008). Full Text
 Chandrasekharan, S, and Mehta, AC. "Effects of the anomaly on the twoflavor QCD chiral phase transition." Phys Rev Lett 99, no. 14 (October 5, 2007): 142004. Full Text Link to Item
 Podolsky, D, Berkeley, UC, Chandrasekharan, S, Vishwanath, A, Berkeley, UC, and Berkeley, LBL. "Novel transitions in S=1 spinor condensates and XY AshkinTeller universality." arXiv:0707.0695 [condmat.statmech] (2007). (Academic Article)
 Chandrasekharan, S. "Anomalous superfluidity in (2+1)dimensional twocolor lattice QCD." Phys Rev Lett 97, no. 18 (November 3, 2006): 182001. Full Text Link to Item
 Priyadarshee, A, Chandrasekharan, S, Lee, JW, and Baranger, HU. "Quantum phase transitions of hardcore bosons in background potentials." Phys Rev Lett 97, no. 11 (September 15, 2006): 115703. Full Text Link to Item
 Kaul, RK, Zaránd, G, Chandrasekharan, S, Ullmo, D, and Baranger, HU. "Spectroscopy of the Kondo problem in a box." Phys Rev Lett 96, no. 17 (May 5, 2006): 176802. Full Text Link to Item
 Chandrasekharan, S, and Jiang, FJ. "Phase diagram of twocolor lattice QCD in the chiral limit." Physical Review D  Particles, Fields, Gravitation and Cosmology 74, no. 1 (2006). Full Text
 Chandrasekharan, S. "New approaches to strong coupling lattice QCD." Int. J. Mod. Phys. B20 (2006): 27142723. (Academic Article)
 Yoo, J, Chandrasekharan, S, and Baranger, HU. "Multilevel algorithm for quantumimpurity models." Phys Rev E Stat Nonlin Soft Matter Phys 71, no. 3 Pt 2B (March 2005): 036708. Full Text Link to Item
 Chandrasekharan, S, and Strouthos, CG. "Failure of mean field theory at large N." Phys Rev Lett 94, no. 6 (February 18, 2005): 061601. Full Text Link to Item
 Kaul, RK, Ullmo, D, Chandrasekharan, S, and Baranger, HU. "Mesoscopic Kondo problem." Europhysics Letters 71, no. 6 (2005): 973979. Full Text
 Lee, JW, Chandrasekharan, S, and Baranger, HU. "Quantum Monte Carlo study of disordered fermions." Physical Review B  Condensed Matter and Materials Physics 72, no. 2 (2005). Full Text
 Yoo, J, Chandrasekharan, S, Kaul, RK, Ullmo, D, and Baranger, HU. "On the sign problem in the HirschFye algorithm for impurity problems." Journal of Physics A: Mathematical and General 38, no. 48 (2005): 1030710310. Full Text
 Yoo, J, Chandrasekharan, S, Kaul, RK, Ullmo, D, and Baranger, HU. "Cluster algorithms for quantum impurity models and mesoscopic Kondo physics." Physical Review B  Condensed Matter and Materials Physics 71, no. 20 (2005). Full Text
 Brower, R, Chandrasekharan, S, Riederer, S, and Wiese, UJ. "Dtheory: Field quantization by dimensional reduction of discrete variables." Nuclear Physics B 693, no. 13 (2004): 149175. Full Text
 Chandrasekharan, S, Pepe, M, Steffen, FD, and Wiese, UJ. "Lattice theories with nonlinearly realized chiral symmetry." Nuclear Physics B  Proceedings Supplements 129130 (2004): 507509. Full Text
 Chandrasekharan, S, and Strouthos, CG. "Connecting lattice QCD with chiral perturbation theory at strong coupling." Physical Review D 69, no. 9 (2004). Full Text
 Chandrasekharan, S, and Wiese, UJ. "An introduction to chiral symmetry on the lattice." Progress in Particle and Nuclear Physics 53, no. 2 (2004): 373418. Full Text
 Chandrasekharan, S. "Chiral and critical in strong coupling QCD." Nuclear Physics B  Proceedings Supplements 129130 (2004): 578580. Full Text
 Adams, DH, and Chandrasekharan, S. "Chiral limit of strongly coupled lattice gauge theories." Nuclear Physics B 662, no. 12 (2003): 220246. Full Text
 Brower, R, Chandrasekharan, S, Negele, JW, and Wiese, UJ. "LATTICE QCD AT FIXED TOPOLOGY." Phys. Lett. B 560 (2003): 6474. (Academic Article)
 Brower, R, Chandrasekharan, S, Negele, JW, and Wiese, UJ. "QCD at fixed topology." Physics Letters, Section B: Nuclear, Elementary Particle and HighEnergy Physics 560, no. 12 (2003): 6474. Full Text
 Chandrasekharan, S, Cox, J, Osborn, JC, and Wiese, UJ. "Meroncluster approach to systems of strongly correlated electrons." Nuclear Physics B 673, no. 3 (2003): 405436. Full Text
 Chandrasekharan, S, Pepe, M, Steffen, FD, and Wiese, UJ. "Nonlinear realization of chiral symmetry on the lattice." Journal of High Energy Physics 7, no. 12 (2003): 831863.
 Chandrasekharan, S, and Jiang, FJ. "Chiral limit of strongly coupled lattice QCD at finite temperatures." Physical Review D 68, no. 9 (2003). Full Text
 Chandrasekharan, S, and Strouthos, CG. "KosterlitzThouless universality in dimer models." Physical Review D 68, no. 9 (2003). Full Text
 Chandrasekharan, S. "Chiral limit of staggered fermions at strong couplings: A loop representation." Nuclear Physics B  Proceedings Supplements 119 (2003): 929931. Full Text
 Chandrasekharan, S. "Connections between quantum chromodynamics and condensed matter physics." Pramana  Journal of Physics 61, no. 5 (2003): 901910.
 Brower, R, Chandrasekharan, S, Negele, JW, and Wiese, UJ. "Physical observables from lattice QCD at fixed topology." Nuclear Physics B  Proceedings Supplements 106107 (2002): 581583. Full Text
 Chandrasekharan, S, Scarlet, B, and Wiese, UJ. "From spin ladders to the 2D O(3) model at nonzero density." Computer Physics Communications 147, no. 12 (2002): 388393. Full Text
 Chandrasekharan, S, and Osborn, JC. "KosterlitzThouless universality in a fermionic system." Physical Review B  Condensed Matter and Materials Physics 66, no. 4 (2002): 451131451135.
 Chandrasekharan, S. "Unexpected results in the chiral limit with staggered fermions." Physics Letters, Section B: Nuclear, Elementary Particle and HighEnergy Physics 536, no. 12 (2002): 7278. Full Text
 Chandrasekharan, S. "Superconductivity and chiral symmetry breaking with fermion clusters." Nuclear Physics B  Proceedings Supplements 106107 (2002): 10251027. Full Text
 Alford, M, Chandrasekharan, S, Cox, J, and Wiese, UJ. "Solution of the complex action problem in the Potts model for dense QCD." Nuclear Physics B 602, no. 12 (2001): 6186. Full Text
 Chandrasekharan, S, Chudnovsky, V, Schlittgen, B, and Wiese, UJ. "Flop transitions in cuprate and color superconductors: From SO(5) to SO(10) unification?." Nuclear Physics B  Proceedings Supplements 94, no. 13 (2001): 449452. Full Text
 Chandrasekharan, S, and Osborn, J. "Solving sign problems with meron algorithms." COMPUTER SIMULATION STUDIES IN CONDENSEDMATTER PHYSICS XIII 86 (2001): 2842. Link to Item
 Chandrasekharan, S. "QCD at a finite density of static quarks." Nuclear Physics B  Proceedings Supplements 94, no. 13 (2001): 7178. Full Text
 Chandrasekharan, S, Cox, J, Holland, K, and Wiese, UJ. "Meroncluster simulation of a chiral phase transition with staggered fermions." Nuclear Physics B 576, no. 13 (2000): 481500.
 Chandrasekharan, S, and Osborn, JC. "Critical behavior of a chiral condensate with a meron cluster algorithm." Physics Letters, Section B: Nuclear, Elementary Particle and HighEnergy Physics 496, no. 12 (2000): 122128. Full Text
 Chandrasekharan, S. "Fermion cluster algorithms." Nuclear Physics B  Proceedings Supplements 8384, no. 13 (2000): 774776.
 Bhattacharya, T, Chandrasekharan, S, Gupta, R, Lee, W, and Sharpe, S. "Nonperturbative renormalization constants using Ward identities." Nuclear Physics B  Proceedings Supplements 73, no. 13 (1999): 276278.
 Bhattacharya, T, Chandrasekharan, S, Gupta, R, Lee, W, and Sharpe, S. "Nonperturbative renormalization constants using Ward identities ^{1}." Physics Letters, Section B: Nuclear, Elementary Particle and HighEnergy Physics 461, no. 12 (1999): 7988.
 Brower, R, Chandrasekharan, S, and Wiese, UJ. "QCD as a quantum link model." Physical Review D  Particles, Fields, Gravitation and Cosmology 60, no. 9 (1999): 114.
 Brower, R, Chandrasekharan, S, and Wiese, UJ. "QCD as a quantum link model." Physical Review D 60, no. 9 (1999): DUMMY42.
 Chandrasekharan, S, Chen, D, Christ, N, Lee, W, Mawhinney, R, and Vranas, P. "Anomalous chiral symmetry breaking above the QCD phase transition." Physical Review Letters 82, no. 12 (1999): 24632466.
 Chandrasekharan, S, and Wiese, UJ. "MeronCluster Solution of Fermion Sign Problems." Physical Review Letters 83, no. 16 (1999): 31163119.
 Chandrasekharan, S. "Confinement, chiral symmetry breaking and continuum limits in quantum link models." Nuclear Physics B  Proceedings Supplements 73, no. 13 (1999): 739741.
 Chandrasekharan, S. "Lattice QCD with GinspargWilson fermions." Physical Review D  Particles, Fields, Gravitation and Cosmology 60, no. 7 (1999): 16.
 Chandrasekharan, S. "GinspargWilson fermions: A study in the Schwinger model." Physical Review D  Particles, Fields, Gravitation and Cosmology 59, no. 9 (1999): 18.
 Beard, BB, Brower, RC, Chandrasekharan, S, Chen, D, Tsapalis, A, and Wiese, UJ. "Dtheory: Field theory via dimensional reduction of discrete variables." Nuclear Physics B  Proceedings Supplements 63, no. 13 (1998): 775789.
 Brower, R, Chandrasekharan, S, and Wiese, UJ. "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): 520533.
 Brower, R, Chandrasekharan, S, and Wiese, UJ. "Green's functions from quantum cluster algorithms." Physica A: Statistical Mechanics and its Applications 261, no. 34 (1998): 520533.
 Orginos, K, Bietenholz, W, Brower, R, Chandrasekharan, S, and Wiese, UJ. "The perfect QuarkGluon vertex function." Nuclear Physics B  Proceedings Supplements 63, no. 13 (1998): 904906.
 Bietenholz, W, Brower, R, Chandrasekharan, S, and Wiese, UJ. "Perfect lattice topology: The quantum rotor as a test case." Physics Letters, Section B: Nuclear, Elementary Particle and HighEnergy Physics 407, no. 34 (1997): 283289.
 Bietenholz, W, Brower, R, Chandrasekharan, S, and Wiese, UJ. "Perfect lattice actions for staggered fermions." Nuclear Physics B 495, no. 12 (1997): 285305.
 Bietenholz, W, Brower, R, Chandrasekharan, S, and Wiese, UJ. "Progress on perfect lattice actions for QCD." Nuclear Physics B  Proceedings Supplements 53, no. 13 (1997): 921934.
 Chandrasekharan, S, and Wiese, UJ. "Quantum link models: A discrete approach to gauge theories." Nuclear Physics B 492, no. 12 (1997): 455471.
 Chandrasekharan, S. "A large N chiral transition on a plaquette." Physics Letters, Section B: Nuclear, Elementary Particle and HighEnergy Physics 395, no. 12 (1997): 8388.
 Chandrasekharan, S, and Huang, S. "Z3 twisted chiral condensates in QCD at finite temperatures." Phys Rev D Part Fields 53, no. 9 (May 1, 1996): 51005104. Link to Item
 Chandrasekharan, S, and Christ, N. "Dirac spectrum, axial anomaly and the QCD chiral phase transition." Nuclear Physics B  Proceedings Supplements 47, no. 13 (1996): 527534. Full Text
 Chandrasekharan, S, and Huang, S. "Z_{3} twisted chiral condensates in QCD at finite temperatures." Physical Review D  Particles, Fields, Gravitation and Cosmology 53, no. 9 (1996): 51005104.
 Chandrasekharan, S. "Critical behavior of the chiral condensate at the QCD phase transition." Nuclear Physics B (Proceedings Supplements) 42, no. 13 (1995): 475477. Full Text
 Chandrasekharan, S. "Anomaly cancellation in 2+1 dimensions in the presence of a domain wall mass." Phys Rev D Part Fields 49, no. 4 (February 15, 1994): 19801987. Link to Item
 Chandrasekharan, S. "Fermions with a domainwall mass: explicit greens function and anomaly cancellation." Nuclear Physics B (Proceedings Supplements) 34, no. C (1994): 579582.
 Ayyar, V, Chandrasekharan, S, and Rantaharju, J. "Benchmark results in the 2D lattice Thirring model with a chemical potential." Link to Item
 Brower, R, Chandrasekharan, S, and Wiese, UJ. "QCD as a Quantum Link Model." Phys. Rev. D 60: 094502. Full Text Link to Item
 Cecile, DJ, and Chandrasekharan, S. "Sigmaresonance and convergence of chiral perturbation theory." PoS LATTICE 2008: 071. Link to Item
 Chandrasekharan, S, Pepe, M, Steffen, FD, and Wiese, UJ. "Nonlinear Realization of Chiral Symmetry on the Lattice." JHEP 0312: 035. Full Text Link to Item
 Chandrasekharan, S, Scarlet, B, and Wiese, UJ. "MeronCluster Simulation of Quantum Spin Ladders in a Magnetic Field." Link to Item
 Chandrasekharan, S, and Jiang, FJ. "Chiral limit of 2color QCD at strong couplings." PoS LAT 2005: 198. Link to Item
 Chandrasekharan, S, and Li, A. "The generalized fermionbag approach." Link to Item
 Chandrasekharan, S, and Li, A. "Quantum critical behavior in three dimensional lattice GrossNeveu models." Full Text Link to Item
 Chandrasekharan, S, and Mehta, AC. "Effects of the anomaly on the twoflavor QCD chiral phase transition." Phys.Rev.Lett. 99: 142004. Full Text Link to Item
 Chandrasekharan, S, and Osborn, JC. "KosterlitzThouless Universality in a Fermionic System." Full Text Link to Item
 Chandrasekharan, S, and Wiese, UJ. "SO(10) Unification of Color Superconductivity and Chiral Symmetry Breaking?." Link to Item
 Chandrasekharan, S, and Wiese, UJ. "Partition Functions of Strongly Correlated Electron Systems as "Fermionants"." Link to Item
 Chandrasekharan, S. "GinspargWilson Fermions: A study in the Schwinger Model." Phys.Rev. D 59: 094502. Full Text Link to Item
 Chandrasekharan, S. "Lattice QCD with GinspargWilson fermions." Phys. Rev. D 60: 074503. Full Text Link to Item
 Chandrasekharan, S. "A new computational approach to lattice quantum field theories." PoS LATTICE 2008: 003. Link to Item
 Chandrasekharan, S. "A Chiral Phase Transition using a Fermion Cluster Algorithm." Chin.J.Phys. 38: 696706. Link to Item
 Chandrasekharan, S. "Novel Quantum Monte Carlo Algorithms for Fermions." Link to Item
 Chandrasekharan, S. "Fermion Bag Approach to Fermion Sign Problems." Link to Item
 Huffman, E, and Chandrasekharan, S. "Solution to new sign problems with Hamiltonian Lattice Fermions." PoS (LATTICE 2014) 058 . Open Access Copy Link to Item
 Huffman, EF, and Chandrasekharan, S. "Solution to sign problems in halffilled spinpolarized electronic systems." Phys. Rev. B 89: 111101. Full Text Link to Item
 Lee, JW, Chandrasekharan, S, and Baranger, HU. "DisorderInduced Superfluidity in Hardcore Bosons in Two Dimensions." Link to Item

 Teaching & Mentoring

Recent Courses

Advising & Mentoring
 I am currently advising a graduate student Emilie Huffman who is expected to defend her PhD degree before April 2017. I am also coadvising another graduate student Hersh Singh. I am also mentoring an undergraduate German exchange student Jernej Frank.

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
 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
 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
Some information on this profile has been compiled automatically from Duke databases and external sources. (Our About page explains how this works.) If you see a problem with the information, please write to Scholars@Duke and let us know. We will reply promptly.