Double-winding Wilson loops in 
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 lattice Yang-Mills gauge theory

Kato, Seikou; Shibata, Akihiro; Kondo, Keiichi

doi:10.1103/physrevd.102.094521

Cited by 4 publications

(1 citation statement)

References 38 publications

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“…Originally invented to study quark confinement in quantum chromodynamics [7] lattice gauge theories (LGTs) are currently experiencing renewed attention with their potential for numerical and quantum simulation of systems relevant to both high-energy particle physics [8][9][10][11][12] and low-energy condensed matter physics [13][14][15]. Such simulations have the potential to enlighten the otherwise scarcely known non-equilibrium structure of LGTs.…”

Section: Introductionmentioning

confidence: 99%

Dynamical quantum phase transitions in a noisy lattice gauge theory

Jensen,

Pedersen,

Zinner

2022

Preprint

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Lattice gauge theories (LGTs) form an intriguing class of theories highly relevant to both highenergy particle physics and low-energy condensed matter physics with the rapid development of engineered quantum devices providing new tools to study e.g. dynamics of such theories. The massive Schwinger model is known to exhibit intricate properties of more complicated theories and has recently been shown to undergo dynamical quantum phase transitions out of equilibrium. With current technology, noise is inevitable and potentially fatal for a successful quantum simulation. This paper studies the dynamics subject to noise of a (1 + 1)D U(1) quantum link model following a quench of the sign of the mass term. We find that not only is the system capable of handling noise at rates realistic in NISQ-era devices, promising the possiblity to study the target dynamics with current technology, but the effect of noise can be understood in terms of simple models. Specifically the gauge-breaking nature of bit-flip channels results in exponential dampening of state amplitudes, and thus observables, which does not affect the structures of interest. This is especially important as it demonstrates that the gauge theory can be successfully studied with devices that only exhibit approximate gauge invariance.

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