Relaxation times for Bose-Einstein condensation by self-interaction and gravity

被引：20

作者：

Chen, Jiajun ^{[1
,2
]}

Du, Xiaolong ^{[3
]}

Lentz, Erik W. ^{[2
,4
]}

Marsh, David J. E. ^{[5
]}

机构：

[1] Southwest Univ, Sch Phys Sci & Technol, Chongqing 400715, Peoples R China

[2] Georg August Univ Gottingen, Inst Astrophys, Friedrich Hund Pl 1, D-37077 Gottingen, Germany

[3] Carnegie Observ, 813 Santa Barbara St, Pasadena, CA 91101 USA

[4] Pacific Northwest Natl Lab, Richland, WA 99354 USA

[5] Kings Coll London, Theoret Particle Phys & Cosmol, London WC2R 2LS, England

来源：

PHYSICAL REVIEW D | 2022年 / 106卷 / 02期

关键词：

DARK-MATTER; INVARIANCE; EQUATION;

D O I：

10.1103/PhysRevD.106.023009

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In this paper, we study the Bose-Einstein condensation of a scalar field with an attractive self-interaction, with or without gravitational interactions. We confirm through full dynamical simulation that the condensation timescale due to self-interaction is inversely proportional to the square of the number density n and the self-coupling constant g:tau proportional to n(-2)g(-2). We also investigate the condensation timescale when self-interaction and gravity are both important by solving the Gross-Pitaevskii-Poisson equations, and find that the condensation time scales according to an additive model for the cross section. We discuss the relevance of our results to theoretical models of boson star formation by condensation.

引用

页数：6

共 46 条

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