Thermalization of overpopulated systems in the 2PI formalism - Archive ouverte HAL Access content directly
Journal Articles Physical Review D Year : 2017

Thermalization of overpopulated systems in the 2PI formalism

(1) , (2, 3) , (3)
1
2
3

Abstract

Based on the two-particle irreducible (2PI) formalism to next-to-leading order in the $1/N$ expansion, we study the thermalization of overpopulated systems in scalar $O(N)$ theories with moderate coupling. We focus in particular on the growth of soft modes, and examine whether this can lead to the formation of a transient Bose-Einstein condensate (BEC) when the initial occupancy is high enough. For the value of the coupling constant used in our simulations, we find that while the system rapidly approaches the condensation threshold, the formation of a BEC is eventually hindered by particle number changing processes.
Fichier principal
Vignette du fichier
Tsu1.pdf (488.51 Ko) Télécharger le fichier
Origin : Publisher files allowed on an open archive

Dates and versions

cea-01543664 , version 1 (21-06-2017)
cea-01543664 , version 2 (07-10-2022)

Identifiers

Cite

Shoichiro Tsutsui, Jean-Paul Blaizot, Yoshitaka Hatta. Thermalization of overpopulated systems in the 2PI formalism. Physical Review D, 2017, 96, pp.036004. ⟨10.1103/PhysRevD.96.036004⟩. ⟨cea-01543664v2⟩
115 View
188 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More