Related papers: The sine-Gordon model from coupled condensates: a Generalized Hydrodynamics viewpoint

The sine-Gordon model from coupled condensates: a Generalized Hydrodynamics viewpoint

URL: http://arxiv.org/abs/2310.04493v2
Date: Thu, 11 Jan 2024 07:01:54 GMT
Title: The sine-Gordon model from coupled condensates: a Generalized Hydrodynamics viewpoint
Authors: Alvise Bastianello
Abstract summary: We analyze the realization of sine-Gordon from the interference pattern of two one-dimensional quasicondensates. We show how, despite sine-Gordon being an integrable field theory, trap-induced inhomogeneities cause instabilities of excitations and provide exact analytical results to capture this effect.
Score: 0.0
License: http://creativecommons.org/licenses/by/4.0/
Abstract: The sine-Gordon model captures the low-energy effective dynamics of a wealth of one-dimensional quantum systems, stimulating the experimental efforts in building a versatile quantum simulator of this field theory and fueling the parallel development of new theoretical toolkits able to capture far-from-equilibrium settings. In this work, we analyze the realization of sine-Gordon from the interference pattern of two one-dimensional quasicondensates: we argue the emergent field theory is well described by its classical limit and develop its large-scale description based on Generalized Hydrodynamics. We show how, despite sine-Gordon being an integrable field theory, trap-induced inhomogeneities cause instabilities of excitations and provide exact analytical results to capture this effect.

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