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Higgs vacuum decay in a braneworld

Cuspinera, Leopoldo; Gregory, Ruth; Marshall, Katie M.; Moss, Ian G.

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Authors

Leopoldo Cuspinera

Ruth Gregory

Katie M. Marshall

Ian G. Moss



Abstract

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.

Citation

Cuspinera, L., Gregory, R., Marshall, K. M., & Moss, I. G. (2020). Higgs vacuum decay in a braneworld. International Journal of Modern Physics D, 29(1), Article 2050005. https://doi.org/10.1142/s0218271820500054

Journal Article Type Article
Acceptance Date Oct 25, 2019
Online Publication Date Dec 4, 2019
Publication Date 2020-01
Deposit Date Dec 19, 2019
Publicly Available Date Dec 19, 2019
Journal International Journal of Modern Physics D
Print ISSN 0218-2718
Electronic ISSN 1793-6594
Publisher World Scientific Publishing
Peer Reviewed Peer Reviewed
Volume 29
Issue 1
Article Number 2050005
DOI https://doi.org/10.1142/s0218271820500054
Public URL https://durham-repository.worktribe.com/output/1281034

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Published Journal Article (Advance online version) (650 Kb)
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Publisher Licence URL
http://creativecommons.org/licenses/by/4.0/

Copyright Statement
Advance online version This is an Open Access article published by World Scientific Publishing Company. It is distributed
under the terms of the Creative Commons Attribution 4.0 (CC BY) License which permits use,
distribution and reproduction in any medium, provided the original work is properly cited.






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