Abstracts
Poster Abstracts | Talk Abstracts
Qubit models for quantum simulation of quantum field theory
Presenting Author: Alex Buser, California Institute of Technology
Contributing Author(s): Tanmoy Bhattacharya,
Shailesh Chandrasekharan,
Hersh Singh,
Rajan Gupta
Quantum computers are expected to outperform classical methods in the simulation of strongly-coupled quantum field theories, as they permit the calculation of dynamic quantities in real-time and avoid the notorious sign-problem. We consider a class of qubit models which can be simulated efficiently on a fault-tolerant quantum computer, and present evidence that these models possess a rich phase diagram. One of the quantum critical points in the phase diagram may help define the traditional asymptotically free O(3) non-linear sigma model. We discuss implementation of these qubit models on both NISQ and fault-tolerant quantum computers, and provide numerical results on adiabatic ground state preparation for the O(3) sigma model. This work serves as a stepping stone towards simulating non-Abelian Kogut-Susskind type gauge theories with quantum devices.
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