4.7 Article

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

期刊

PHYSICAL REVIEW D
卷 106, 期 2, 页码 -

出版社

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.106.023009

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资金

  1. NASA ATP Grant [17ATP17-0120]
  2. U.S. Department of Energy (DOE)
  3. U.S. Department of Energy [DE-AC05-76RL01830]

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In this paper, we investigate the Bose-Einstein condensation of a scalar field with an attractive self-interaction, with or without gravitational interactions. Our full dynamical simulation confirms 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: τ ∝ n(-2)g(-2). Additionally, we analyze the condensation timescale when both self-interaction and gravity are important and find that the condensation time scales according to an additive model for the cross section. We discuss the relevance of our findings to theoretical models of boson star formation by condensation.
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.

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