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| Hauptseite > Publikationsdatenbank > U(N) gauge theory in the strong coupling limit on a quantum annealer |
| Hauptseite > Publikationsdatenbank > U(N) gauge theory in the strong coupling limit on a quantum annealer |
| Journal Article | FZJ-2023-05088 |
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2023
American Physical Society
Ridge, NY
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Please use a persistent id in citations: doi:10.1103/PhysRevD.108.074501 doi:10.34734/FZJ-2023-05088
Abstract: Lattice QCD in the strong coupling regime can be formulated in dual variables, which are integer-valued. It can be efficiently simulated for modest finite temperatures and finite densities via the worm algorithm, circumventing the finite density sign problem in this regime. However, the low temperature regime is more expensive to address. As the partition function is solely expressed in terms of integers, it can be cast as a combinatorial optimization problem that can be solved on a quantum annealer. We will first explain the setup of the system we want to study and then present its reformulation suitable for a quantum annealer, and in particular the D wave. As a proof of concept, we present first results obtained on D wave for gauge group U(1) and U(3), and outline the next steps towards gauge groups SU(3). We find that in addition, histogram reweighting greatly improves the accuracy of our observables when compared to analytic results.
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