Lookup NU author(s): Dr Kate Marshall,
Professor Ian Moss
This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).
© 2020 © The Author(s). The Author(s).We examine the effect of large extra dimensions on vacuum decay in the Randall-Sundrum (RS) braneworld paradigm. We assume the scalar field is confined to the brane, and compute the probability for forming an "anti-de Sitter" (AdS) bubble inside a critical flat RS brane. We present the first full numerical solutions for the brane instanton considering two test potentials for the scalar field. We explore the geometrical impact of thin and thick bubble walls, and compute the instanton action in a range of cases. We conclude by commenting on a more physically realistic potential relevant for the Standard Model Higgs. For bubbles with large backreaction, the extra dimension has a dramatic effect on the tunnelling rate, however, for the weakly backreacting bubbles more relevant for realistic Standard Model potentials, the extra dimension has little impact.
Author(s): Cuspinera L, Gregory R, Marshall KM, Moss IG
Publication type: Article
Publication status: Published
Journal: International Journal of Modern Physics D
Print publication date: 01/01/2020
Online publication date: 04/12/2019
Acceptance date: 25/10/2019
Date deposited: 10/01/2020
ISSN (print): 0218-2718
ISSN (electronic): 1793-6594
Publisher: World Scientific Publishing Co. Pte Ltd
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