Tuning universality far from equilibrium

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Publication Details

Output type: Journal article

Author list: Karl M, Nowak B, Gasenzer T

Publisher: Nature Research

Publication year: 2013

Journal: Scientific Reports (2045-2322)

Volume number: 3

ISSN: 2045-2322

eISSN: 2045-2322

Languages: English-Great Britain (EN-GB)

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Open access status: gold

Full text URL: https://www.nature.com/articles/srep02394.pdf

Abstract

Possible universal dynamics of a many-body system far from thermal equilibrium are explored. A focus is set on meta-stable non-thermal states exhibiting critical properties such as self-similarity and independence of the details of how the respective state has been reached. It is proposed that universal dynamics far from equilibrium can be tuned to exhibit a dynamical transition where these critical properties change qualitatively. This is demonstrated for the case of a superfluid two-component Bose gas exhibiting different types of long-lived but non-thermal critical order. Scaling exponents controlled by the ratio of experimentally tuneable coupling parameters offer themselves as natural smoking guns. The results shed light on the wealth of universal phenomena expected to exist in the far-from-equilibrium realm.

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