Hello.

I am Hersh Singh, a postdoctoral researcher in theoretical physics at the InQubator for Quantum Simulation at the University of Washington, Seattle. I am also affiliated with the Institute for Nuclear Theory.
I am interested in studies of strongly coupled quantum field theories, with applications to nuclear and high-energy physics, using the powerful tools of lattice field theory, effective field theory and quantum information science.
Before this, I got a
- PhD in Physics from Duke University (2014-2020) working on lattice and effective field theories with Profs. Roxanne Springer and Shaliesh Chandrasekharan, and
- Bachelor’s and Master’s in Electrical Engineering from Indian Institute of Technology Madras (2009-2014), working with Prof. Suresh Govindarajan.
Some of my recent work includes
- qubit regularizations of quantum field theories: with the goal of constructing regularizations of interesting QFTs for the quantum simulation of QFTs
- application of nuclear effective field theory: large-N expansion in two-body systems, and three-body systems
- many of my ongoing projects are around using study aspects of quantum information in QFTs, using worm algorithms and tensor network methods
A complete list of my publications can be found here (or on INSPIRE).
I thoroughly enjoy teaching and always seem to find opportunites to talk about things that I am excited about. During my PhD, I was awarded the Mary Creason Memorial Award for Undergraduate Teaching. I also taught a mini-course on Renormalization Group (Spring 2020, Duke University) for graduate students.
Publications
-
“From asymptotic freedom to θ vacua: Qubit embeddings of the O(3) nonlinear σ model”
(2022)
Stephan Caspar, Hersh Singh
arXiv:2203.15766 -
“Large-charge conformal dimensions at the O(N) Wilson-Fisher fixed point”
(2022)
Hersh Singh
arXiv:2203.00059 -
“Space-time symmetric qubit regularization of the asymptotically free two-dimensional O(4) model”
(2022)
Junzhe Zhou, Hersh Singh, Tanmoy Bhattacharya, Shailesh Chandrasekharan, Rajan Gupta
Phys.Rev.D 105 (2022) 5, 054510
DOI:10.1103/PhysRevD.105.054510. arXiv:2111.13780 -
“Qubit Regularization of Asymptotic Freedom”
(2021)
Tanmoy Bhattacharya, Alexander J. Buser, Shailesh Chandrasekharan, Rajan Gupta, Hersh Singh
Phys.Rev.Lett. 126 (2021) 17, 172001
DOI:10.1103/PhysRevLett.126.172001. arXiv:2012.02153 -
“Qubit regularized $O(N)$ nonlinear sigma models”
(2022)
Hersh Singh
Phys.Rev.D 105 (2022) 11, 114509
DOI:10.1103/PhysRevD.105.114509. arXiv:1911.12353 -
“A qubit regularization of the $O(3)$ sigma model”
(2019)
Hersh Singh and Shailesh Chandrasekharan
Phys. Rev. D 100 (Sept. 2019), p. 054505
DOI:10.1103/PhysRevD.100.054505. arXiv:1905.13204 -
“Few-body physics on a space-time lattice in the worldline approach”
(2019)
Hersh Singh and Shailesh Chandrasekharan
Phys. Rev. D 99 (7 Apr. 2019), p. 074511
DOI:10.1103/PhysRevD.99.074511. arXiv:1812.05080 -
“Worldline approach to few-body physics on the lattice”
(2018)
Hersh Singh
PoS LATTICE2018(2018), p. 158
DOI:10.22323/1.334.0158. arXiv:1812.02364 -
“Large-$N_c$ relationships among two-derivative pionless effective field theory couplings”
(2018)
Matthias R. Schindler, Hersh Singh, and Roxanne P. Springer
Phys. Rev. C 98 (4 Oct. 2018), p. 044001
DOI:10.1103/PhysRevC.98.044001. arXiv:1805.06056
Recent Talks
- “From Qubits to Quantum Field Theories”
Duke Undergraduate Quantum Information Society (April 20, 2022)
Invited talk - “Qubit Regularization of QFTs. From UV to IR: Asymptotic Freedom and Topology”
Virtual Lattice Field Theory Colloquium (March 17, 2022)
Colloquium - “From Qubits to Quantum Field Theories”
University of Washington Bothell (November 23, 2021)
Colloquium - “Entanglement harvesting from the vacuum of quantum spin chains”
Syracuse University - HEP/Cosomology Seminar (Novemeber 15, 2021)
Invited talk - “Entanglement harvesting from the vacuum of quantum spin chains”
Fall Meeting of the APS Division of Nuclear Physics (DNP) Meeting 2021 (October 13, 2021)
Contributed talk - “Qubit Regularization of Asymptotic Freedom”
Lattice 2021 (July 26, 2021)
Contributed talk
Video | Slides - Lectures on “Hamiltonian Time Evolution”
Quantum Computing Internship for Physics Undergraduates, Fermilab (July 20, 2021)
Videos: Lecture 1, Lecture 2 | Notes - Qubit Regularization of Asymptotic Freedom
Indian Insitute of Technology Madras – Dual Mysteries of Gauge and Gravity Online Seminar Series (April 19, 2021)
Invited talk
Video - Qubit Regularization of Asymptotic Freedom
Brookhaven National Lab (January 4, 2021)
Invited talk - Qubit models and large charge effective field theories
Fall Meeting of the APS Division of Nuclear Physics (DNP) 2020 (October 31, 2020)
Contributed talk