Thin and thick bubble walls. Part III. Wall energy

IF 5.3 2区物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS

Journal of Cosmology and Astroparticle Physics Pub Date : 2025-05-22 DOI:10.1088/1475-7516/2025/05/076

Ariel Mégevand and Federico Agustín Membiela

引用次数: 0

Abstract

We study the energy-momentum tensor of a bubble wall beyond the approximation of an infinitely thin wall. To this end, we discuss the proper decomposition into wall and bulk contributions, and we use a systematic method to calculate the energy-momentum tensor at any order in the wall width. We consider the specific examples of spherical bubbles with different initial configurations, and we compare our approximations with a numerical computation.

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薄而厚的气泡壁。第三部分。墙的能量

我们研究了气泡壁在无限薄壁近似之外的能量动量张量。为此，我们讨论了适当地分解为壁和体贡献，并采用系统的方法计算了在壁宽任意阶上的能量-动量张量。我们考虑了具有不同初始构型的球形气泡的具体例子，并将我们的近似与数值计算进行了比较。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Cosmology and Astroparticle Physics 地学天文-天文与天体物理

CiteScore

10.20

自引率

23.40%

发文量

632

审稿时长

1 months

期刊介绍： Journal of Cosmology and Astroparticle Physics (JCAP) encompasses theoretical, observational and experimental areas as well as computation and simulation. The journal covers the latest developments in the theory of all fundamental interactions and their cosmological implications (e.g. M-theory and cosmology, brane cosmology). JCAP''s coverage also includes topics such as formation, dynamics and clustering of galaxies, pre-galactic star formation, x-ray astronomy, radio astronomy, gravitational lensing, active galactic nuclei, intergalactic and interstellar matter.