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

Accepted version
Peer-reviewed

Type

Article

Change log

Authors

Orioli, AP 
Berges, J 

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.

Description

Keywords

cond-mat.quant-gas, cond-mat.quant-gas, cond-mat.stat-mech, hep-ph

Journal Title

Physical Review A

Conference Name

Journal ISSN

2469-9926
2469-9934

Volume Title

95

Publisher

American Physical Society (APS)