Hello.

I am Hersh Singh, a postdoctoral researcher in theoretical physics at Fermilab and the Fermilab Quantum Theory Fellow. As a high-energy physicist with an interest in computation, I am excited by the developments in quantum computing and its potential in advancing our understanding of nature at a fundamental level.

Prior to joining Fermilab, I held a postdoctoral position at InQubator for Quantum Simulation at the University of Washington, Seattle and the Institute for Nuclear Theory. I obtained a Ph.D. 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.

A complete list of my publications can be found on iNSPIRE or Google Scholar.

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

1. “From asymptotic freedom to θ vacua: Qubit embeddings of the O(3) nonlinear σ model” (2022)
   Stephan Caspar and Hersh Singh
   Phys. Rev. Lett. 129, 022003
   DOI:10.1103/PhysRevLett.129.022003. arXiv:2203.15766
2. “Large-charge conformal dimensions at the O(N) Wilson-Fisher fixed point” (2022)
   Hersh Singh
   arXiv:2203.00059
3. “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
4. “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
5. “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
6. “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
7. “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
8. “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
9. “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

1. "From Qubits to Quantum Field Theories"
   University of Washington Bothell (Oct 11, 2022)
   Colloquium
2. "From topological $\theta$ vacua to asymptotic freedom: Qubit models, sign problems, and anomalies"
   Rising Researchers Seminar Series (Oct 04, 2022)
   Invited talk
3. "From topological $\theta$ vacua to asymptotic freedom: Qubit models, sign problems, and anomalies"
   Triangle Nuclear Theory Colloquium, Duke University (Sept 27, 2022)
   Invited talk
4. "Hamiltonian Time Evolution"
   Quantum Computing Internship for Physics Undergraduates (QCIPU) 2022, Fermilab (July 05, 2022)
   Lectures
5. "From Qubits to Quantum Field Theories"
   Duke Undergraduate Quantum Information Society (April 20, 2022)
   Invited talk
6. "Qubit Regularization of QFTs. From UV to IR: Asymptotic Freedom and Topology"
   MIT Virtual Lattice Field Theory Colloquium (March 17, 2022)
   Colloquium
7. "From Qubits to Quantum Field Theories"
   University of Washington Bothell (November 23, 2021)
   Colloquium
8. "Entanglement harvesting from the vacuum of quantum spin chains"
   Syracuse University - HEP/Cosomology Seminar (Novemeber 15, 2021)
   Invited talk
9. "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
10. "Qubit Regularization of Asymptotic Freedom"
    Lattice 2021 (July 26, 2021)
    Contributed talk
    Video | Slides
11. "Lectures on "Hamiltonian Time Evolution""
    Quantum Computing Internship for Physics Undergraduates, Fermilab (July 20, 2021)
    Lecture
    Videos: Lecture 1, Lecture 2 | Notes
12. "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
13. "Qubit Regularization of Asymptotic Freedom"
    Brookhaven National Lab (January 4, 2021)
    Invited talk
14. "Qubit models and large charge effective field theories"
    Fall Meeting of the APS Division of Nuclear Physics (DNP) 2020 (October 31, 2020)
    Contributed talk
15. "Qubit models and large-charge conformal field theories"
    Duke Nuclear Theory seminar, Duke University, Durham, NC, USA (November 26, 2019)
    Invited talk
16. "Pionless EFT – applications to nuclear and dark matter physics"
    University of Bern, Switzerland (July 30, 2019)
    Invited talk
17. "A qubit regularization of the $O(3)$ sigma model"
    ECT* Doctoral Training Program on "Effective Field Theory Techniques", Trento, Italy (July 03, 2019)
    Contributed talk
18. "A qubit regularization of the $O(3)$ sigma model"
    Lattice 2019, Wuhan, China (June 19, 2019)
    Contributed talk
19. "Few-body physics of contact interactions on the lattice"
    MIAPP Workshop on Interface of Effective Field Theories and Lattice Gauge Theory, TUM Garching, Germany (November 06, 2018)
    Invited talk
20. "Lectures on "Foundations of quantum mechanics""
    Duke Physics (September – October 2018)
    Seminar
21. "Worldline approach to few-body physics on the lattice"
    Lattice 2018, East Lansing, MI, USA (July 24, 2018)
    Contributed talk