PoS - Proceedings of Science
Volume 453 - The 40th International Symposium on Lattice Field Theory (LATTICE2023) - Quantum Computing and Quantum Information
Testing importance sampling on a quantum annealer for strong coupling $SU(3)$ gauge theory
J. Kim*, T. Luu and W. Unger
Full text: pdf
Pre-published on: December 27, 2023
Published on: November 06, 2024
Abstract
$SU(N_c)$ gauge theories in the strong coupling limit can be described by integer variables representing monomers, dimers and baryon loops. We demonstrate how the D-wave quantum
annealer can perform importance sampling on $U(N_c)$ gauge theory in the strong coupling formulation of this theory. In addition to causing a sign problem in importance sampling, baryon loops induce a complex QUBO matrix which cannot be optimized by the D-Wave annealer. Instead we show that simulating the sign-problem free quenched action on the
D-Wave is sufficient when combined with a sign reweighting method. As the first test on $SU(3)$ gauge theory, we simulate on $2 \times 2$ lattice and compare the results with its analytic solutions.
DOI: https://doi.org/10.22323/1.453.0219
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