Professor of Physics
Prof. Chandrasekharan is interested in understanding quantum field theories non-perturbatively 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 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 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.
Chandrasekharan, S, and Osborn, JC. "Kosterlitz-Thouless universality in a Fermionic system." Physical Review B Condensed Matter and Materials Physics 66.4 (January 1, 2002): 1-5. Full Text
Chandrasekharan, S, and Osborn, JC. "Kosterlitz-Thouless universality in a fermionic system." Physical Review B - Condensed Matter and Materials Physics 66.4 (2002): 451131-451135.
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 602.1-2 (May 21, 2001): 61-86. 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 94.1-3 (March 1, 2001): 449-452. Full Text
Chandrasekharan, S, and Osborn, J. "Solving sign problems with meron algorithms." COMPUTER SIMULATION STUDIES IN CONDENSED-MATTER PHYSICS XIII 86 (2001): 28-42.
Chandrasekharan, S, and Osborn, JC. "Critical behavior of a chiral condensate with a meron cluster algorithm." Physics Letters, Section B: Nuclear, Elementary Particle and High Energy Physics 496.1-2 (December 21, 2000): 122-128. Full Text
Chandrasekharan, S, Cox, J, Holland, K, and Wiese, UJ. "Meron-cluster simulation of a chiral phase transition with staggered fermions." Nuclear Physics B 576.1-3 (June 12, 2000): 481-500. Full Text
Chandrasekharan, S. "Fermion cluster algorithms." Nuclear Physics B Proceedings Supplements 83-84.1-3 (January 1, 2000): 774-776.
Brower, R, Chandrasekharan, S, and Wiese, UJ. "QCD as a quantum link model." Physical Review D 60.9 (December 1, 1999).