Non-thermal fixed points

• Verfasst von: Schmied, Christian-Marcel [VerfasserIn]
• Verfasst von: Mikheev, Aleksandr N. [VerfasserIn]
• Verfasst von: Gasenzer, Thomas [VerfasserIn]
• Titel: Non-thermal fixed points
• Titelzusatz: universal dynamics far from equilibrium
• Verf.angabe: Christian-Marcel Schmied, Aleksandr N. Mikheev, Thomas Gasenzer
• E-Jahr: 2019
• Jahr: 23 October 2019
• Umfang: ?
• Fussnoten: Gesehen am 19.11.2019
• Titel Quelle: Enthalten in: International journal of modern physics / A
• Ort Quelle: Singapur : World Scientific Publ., 1986
• Jahr Quelle: 2019
• Band/Heft Quelle: 34(2019,29) Artikel-Nummer 1941006, ? Seiten
• ISSN Quelle: 1793-656X
• DOI: doi:10.1142/S0217751X19410069
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1682092070

Abstract

In this article we give an overview of the concept of universal dynamics near non-thermal fixed points in isolated quantum many-body systems. We outline a non-perturbative kinetic theory derived within a Schwinger-Keldysh closed-time path-integral approach, as well as a low-energy effective field theory which enable us to predict the universal scaling exponents characterizing the time evolution at the fixed point. We discuss the role of wave-turbulent transport in the context of such fixed points and discuss universal scaling evolution of systems bearing ensembles of (quasi) topological defects. This is rounded off by the recently introduced concept of prescaling as a generic feature of the evolution towards a non-thermal fixed point.