**Office Location:** Science Drive, 253, Physics/Math Bldg., Durham, NC 27708**Office Phone:** (919) 667-5300**Email Address:** sch27@duke.edu**Web Page:** http://www.phy.duke.edu/~sch/

**Specialties:**

Theoretical nuclear physics

Theoretical particle physics and string theory

Theoretical condensed matter physics

**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 Delhi, India, 1989

**Research Categories:** *Theoretical Nuclear and Particle Physics*

**Current projects:**
Quantum Critical Behavior in Fermion Systems, Using the generalized fermion bag algorithm, Applications to Graphene and Unitary Fermi Gas.

**Research Description:** 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 both condensed matter 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.

**Areas of Interest:**

Quantum Field Theories, Lattice formulations,

Critical Phenomena and Monte Carlo Algorithms.

**Teaching (Spring 2024):**

- Physics 762.01,
*Electrodynamics*Synopsis- Physics 154, TuTh 11:45 AM-01:00 PM

**Recent Publications**
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- Maiti, S; Banerjee, D; Chandrasekharan, S; Marinkovic, MK,
*Asymptotic Freedom at the Berezinskii-Kosterlitz-Thouless Transition without Fine-Tuning Using a Qubit Regularization.*, Physical Review Letters, vol. 132 no. 4 (January, 2024), pp. 041601, American Physical Society (APS) [doi] [abs]. - Liu, H; Bhattacharya, T; Chandrasekharan, S; Gupta, R,
*Phases of 2d massless QCD with qubit regularization*, Physical Review D Particles, Fields, Gravitation and Cosmology (December, 2023), American Physical Society [doi] [abs]. - Bhattacharya, T; Chandrasekharan, S; Gupta, R; Richardson, TR; Singh, H,
*Topological terms with qubit regularization and relativistic quantum circuits*(October, Preprint, 2023) [doi] [abs]. - Liu, H; Huffman, E; Chandrasekharan, S; Kaul, RK,
*Erratum: Quantum Criticality of Antiferromagnetism and Superconductivity with Relativity [Phys. Rev. Lett. 128, 117202 (2022)].*, Physical Review Letters, vol. 131 no. 13 (September, 2023), pp. 139901 [doi] [abs]. - Maiti, S; Banerjee, D; Chandrasekharan, S; Marinkovic, M,
*A qubit regularization of asymptotic freedom at the BKT transition without fine-tuning*, Physical Review Letters (July, 2023), American Physical Society [doi] [abs].

**Highlight:**

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.

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