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arXiv · 1612.03038

Universal scaling of unequal-time correlation functions in ultracold Bose gases far from equilibrium

A. Schachner·A. Piñeiro Orioli·J. Berges
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Abstract

We explore the far-from-equilibrium dynamics of Bose gases in a universal regime associated to nonthermal fixed points. While previous investigations concentrated on scaling functions and exponents describing equal-time correlations, we compute the additional scaling functions and dynamic exponent $z$ characterizing the frequency dependence or dispersion from unequal-time correlations. This allows us to compare the characteristic condensation and correlation times from a finite-size scaling analysis depending on the system's volume.

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A. Schachner, A. Piñeiro Orioli, J. Berges. 2016-12-09. Universal scaling of unequal-time correlation functions in ultracold Bose gases far from equilibrium. https://doi.org/10.1103/physreva.95.053605

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