Shailesh Chandrasekharan

Shailesh Chandrasekharan

Professor of Physics

Office Location: 
Science Drive, 253, Physics/Math Bldg., Durham, NC 27708
Front Office Address: 
Box 90305, Durham, NC 27708-0305
(919) 660-2462


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. 

Education & Training

  • 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

Ayyar, V., and S. Chandrasekharan. “Fermion masses through four-fermion condensates.” Journal of High Energy Physics, vol. 2016, no. 10, Oct. 2016. Scopus, doi:10.1007/JHEP10(2016)058. Full Text

Huffman, E., et al. “Real-time evolution of strongly coupled fermions driven by dissipation.” Annals of Physics, vol. 372, Sept. 2016, pp. 309–19. Scopus, doi: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, vol. 93, no. 8, Apr. 2016. Scopus, doi: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, vol. 91, no. 6, Mar. 2015. Scopus, doi:10.1103/PhysRevD.91.065035. Full Text

Zou, H., et al. “Progress towards quantum simulating the classical O(2) model.” Physical Review a  Atomic, Molecular, and Optical Physics, vol. 90, no. 6, Dec. 2014. Scopus, doi:10.1103/PhysRevA.90.063603. Full Text

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, vol. 89, no. 11, Mar. 2014. Scopus, doi:10.1103/PhysRevB.89.111101. Full Text

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

Chandrasekharan, S., and A. Li. “Quantum critical behavior in three dimensional lattice Gross-Neveu models.” Physical Review D  Particles, Fields, Gravitation and Cosmology, vol. 88, no. 2, July 2013. Scopus, doi:10.1103/PhysRevD.88.021701. Full Text

Chandrasekharan, Shailesh. “Fermion bag approach to fermion sign problems.” The European Physical Journal A, vol. 49, no. 7, Springer Science and Business Media LLC, July 2013. Crossref, doi:10.1140/epja/i2013-13090-y. Full Text

Chandrasekharan, S. “Solutions to sign problems in lattice Yukawa models.” Physical Review D  Particles, Fields, Gravitation and Cosmology, vol. 86, no. 2, July 2012. Scopus, doi:10.1103/PhysRevD.86.021701. Full Text