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: 2016
• Jahr: 9 Dec 2016
• Umfang: 11 S.
• Fussnoten: Gesehen am 08.12.2020
• Titel Quelle: Enthalten in: De.arxiv.org
• Ort Quelle: [S.l.] : Arxiv.org, 1991
• Jahr Quelle: 2016
• Band/Heft Quelle: (2016) Artikel-Nummer 1612.03038, 11 Seiten
• Datenträger: Online-Ressource
• Sprache: eng
• Sach-SW: High Energy Physics - Phenomenology
• Sach-SW: Condensed Matter - Quantum Gases
• Sach-SW: Condensed Matter - Statistical Mechanics
• K10plus-PPN: 1565599365

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.