Schwinger pair production and string breaking in non-Abelian gauge theory from real-time lattice improved Hamiltonians

Abstract

Far-from-equilibrium dynamics of SU(2) gauge theory with Wilson fermions is studied in 1+1 space-time dimensions using a real-time lattice approach. Lattice improved Hamiltonians are shown to be very efficient in simulating Schwinger pair creation and emergent phenomena such as plasma oscillations. As a consequence, significantly smaller lattices can be employed to approach continuum physics in the infinite-volume limit as compared to unimproved implementations. This allows us to compute also higher-order correlation functions including four fermion fields, which give unprecedented insights into the real-time dynamics of the fragmentation process of strings between fermions and antifermions.

arXiv comment19 pages, 12 figures

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• Improved Hamiltonians for Quantum Simulations
• Variational quantum simulation of U(1) lattice gauge theories with qudit systems
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• Prolegomena to a hybrid classical/Rydberg simulator for hadronization (QuPyth)
• Nonperturbative signatures of fractons in the twisted multiflavor Schwinger Model