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Thin and thick bubble walls II: expansion in the wall width

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arxiv 2401.03102 v2 pith:DDRLXQSF submitted 2024-01-06 astro-ph.CO gr-qc

Ariel Mégevand , Federico Agustín Membiela This is my paper · ORCID
classification astro-ph.COgr-qc
keywords wallwidthapproximationbubblethinwallsbeyondbubbles
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We study the dynamics of a cosmological bubble wall beyond the approximation of an infinitely thin wall. In a previous paper, we discussed the range of validity of this approximation and estimated the first-order corrections due to the finite width. Here, we introduce a systematic method to obtain the wall equation of motion and its profile at each order in the wall width. We discuss in detail the next-to-next-to-leading-order terms. We use the results to treat the growth of spherical bubbles and the evolution of small deformations of planar walls.

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  1. Thin and thick bubble walls III: wall energy

    gr-qc 2025-01 conditional novelty 6.0 of 10

    The wall energy-momentum tensor is computed to next-to-next-to-leading order in the wall width, with a decomposition that assigns the potential barrier to the wall.

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