Landau theory for non-equilibrium steady states

Autor: Camille Aron, Claudio Chamon
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: SciPost Physics, Vol 8, Iss 5, p 074 (2020)
Druh dokumentu: article
ISSN: 2542-4653
DOI: 10.21468/SciPostPhys.8.5.074
Popis: We examine how systems in non-equilibrium steady states close to a continuous phase transition can still be described by a Landau potential if one forgoes the assumption of analyticity. In a system simultaneously coupled to several baths at different temperatures, the non-analytic potential arises from the different density of states of the baths. In periodically driven-dissipative systems, the role of multiple baths is played by a single bath transferring energy at different harmonics of the driving frequency. The mean-field critical exponents become dependent on the low-energy features of the two most singular baths. We propose an extension beyond mean field.
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