Journal
INTERNATIONAL JOURNAL OF MODERN PHYSICS D
Volume 29, Issue 1, Pages -Publisher
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S0218271820500054
Keywords
Vacuum decay; bubble nucleation; gravitational instantons
Categories
Funding
- Leverhulme grant Challenging the Standard Model with Black Holes
- STFC consolidated grant [ST/P000371/1]
- CONACyT
- Perimeter Institute for Theoretical Physics
- STFC studentship
- Government of Canada through the Department of Innovation, Science and Economic Development Canada
- Province of Ontario through the Ministry of Research, Innovation and Science
- STFC [ST/P001246/1, ST/P000371/1] Funding Source: UKRI
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We examine the effect of large extra dimensions on vacuum decay in the Randall-Sundrum (RS) braneworid 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.
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