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. "A Chiral Phase Transition using a Fermion Cluster Algorithm." Chin.J.Phys. 38: 696-706.
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 High Energy Physics 407.3-4 (September 4, 1997): 283-289. Full Text