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### Shailesh Chandrasekharan, Associate 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.

Office Location: | Science Drive, 253, Physics/math Bldg., Durham, NC 27708 |

Office Phone: | (919) 660-2462 |

Email Address: | |

Web Page: | http://www.phy.duke.edu/~sch/ |

**Teaching (Spring 2018):**

- PHYSICS 781.01,
*QUANTUM FIELD THEORY*Synopsis- LSRC D243, TuTh 01:25 PM-02:40 PM

**Education:**Ph.D. Columbia University 1996 Doctor of Philosophy Columbia 1995 M.Phil. Columbia University 1994 M.A. Columbia University 1992 B. Tech Indian Institute of Technology, Madras, India 1989 B.S.E.E. Indian Institute of Technology (India) 1989

**Specialties:**-
Theoretical nuclear physics

Theoretical particle physics and string theory

Theoretical condensed matter physics

**Research Interests:***Theoretical Nuclear and Particle Physics***Current projects:**Strongly Coupled Lattice QCD,, Fermion/Cluster algorithms,, One Dimensional Electron Gas, SU(4) Kondo ProblemProf. Chandrasekharan is interested in non-perturbative aspects of Quantum Field Theories. His research focuses on Lattice QCD and other strongly correlated fermionic systems. He develops novel Monte-Carlo algorithms to study these problems.

**Areas of Interest:**Quantum Field Theories, Lattice formulations,

Critical Phenomena and Monte Carlo Algorithms.

**Keywords:**Broken symmetry (Physics) • Critical phenomena (Physics) • Field theory (Physics) • Gauge fields (Physics) • Particles (Nuclear physics) • Phase transformations (Statistical physics) • Quasiparticles (Physics) • Special relativity (Physics) • Statistical physics • Symmetry (Physics) • World line (Physics)

**Current Ph.D. Students**(Former Students)- Emilie S. Huffman
- Venkitesh P Ayyar

**Postdocs Mentored**- Anyi Li (2009 - 2011)
- Jose A. Hoyos Neto (2007 - 2009)
- Ji-Woo Lee (2003/09-2005/08)
- Jaebeom Yoo (2003/09-2005/08)
- Costas Strouthos (2003/01-2004/01)
- David H. Adams (2001/12-2002/08)
- James C Osborn (1999/09-2001/08)

**Recent Publications**(More Publications) (search)- Banerjee, D; Chandrasekharan, S; Orlando, D,
*Conformal Dimensions via Large Charge Expansion.*, Physical Review Letters, vol. 120 no. 6 (February, 2018), pp. 061603 [doi] [abs] - Chandrasekharan, S; Ayyar, V,
*Generating a nonperturbative mass gap using Feynman diagrams in an asymptotically free theory*, Physical Review D - Particles, Fields, Gravitation, and Cosmology, vol. 96 (December, 2017), American Physical Society [doi] - Ayyar, V; Chandrasekharan, S,
*Generating a nonperturbative mass gap using Feynman diagrams in an asymptotically free theory*, Physical Review D, vol. 96 no. 11 (December, 2017) [doi] [abs] - Huffman, E; Chandrasekharan, S,
*Fermion bag approach to Hamiltonian lattice field theories in continuous time*, Physical Review D, vol. 96 no. 11 (December, 2017) [doi] [abs] - Hann, CT; Huffman, E; Chandrasekharan, S,
*Solution to the sign problem in a frustrated quantum impurity model*, Annals of Physics, vol. 376 (January, 2017), pp. 63-75 [doi]

- Banerjee, D; Chandrasekharan, S; Orlando, D,