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

• Verfasst von: Schachner, Andreas [VerfasserIn]
• Verfasst von: Piñeiro Orioli, Asier [VerfasserIn]
• Verfasst von: Berges, Jürgen [VerfasserIn]
• Titel: Universal scaling of unequal-time correlation functions in ultracold Bose gases far from equilibrium
• Verf.angabe: Andreas Schachner, Asier Piñeiro Orioli, and Jürgen Berges
• E-Jahr: 2017
• Jahr: 3 May 2017
• Umfang: 10 S.
• Fussnoten: Gesehen am 08.12.2020
• Titel Quelle: Enthalten in: Physical review
• Ort Quelle: Woodbury, NY : Inst., 2016
• Jahr Quelle: 2017
• Band/Heft Quelle: 95(2017,5) Artikel-Nummer 053605, 10 Seiten
• ISSN Quelle: 2469-9934
• DOI: doi:10.1103/PhysRevA.95.053605
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1565599195

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.