Cited by 17Particle physics theoretical and experimental studiesBlack Holes and Theoretical PhysicsCosmology and Gravitation Theories

Gradient effects on false vacuum decay in gauge theory

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Ai, Wen-Yuan, Cruz, Juan S., Garbrecht, Björn, Tamarit, Carlos·2020·Physical Review D

Abstract

We study false vacuum decay for a gauged complex scalar field in a polynomial potential with nearly degenerate minima. Radiative corrections to the profile of the nucleated bubble as well as the full decay rate are computed in the planar thin-wall approximation using the effective action. This allows to account for the inhomogeneity of the bounce background and the radiative corrections in a self-consistent manner. In contrast to scalar or fermion loops, for gauge fields one must deal with a coupled system that mixes the Goldstone boson and the gauge fields, which considerably complicates the numerical calculation of Green's functions. In addition to the renormalization of couplings, we employ a covariant gradient expansion in order to systematically construct the counterterm for the wave-function renormalization. The result for the full decay rate however does not rely on such an expansion and accounts for all gradient corrections at the chosen truncation of the loop expansion. The ensuing gradient effects are shown to be of the same order of magnitude as nonderivative one-loop corrections.

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Authors
Ai, W.-Y., Cruz, J. S., Garbrecht, B., & Tamarit, C.
Affiliations
UCLouvain (BE)
Venue
Physical Review D
Published
2020-10-02
Volume
102
Issue
8
ISSN
  • 2470-0010 (ISSN-L)
  • 2470-0029
OpenAlex
W3035596487
Cited by
17
References
3
Citations by year
2025: 2 · 2024: 5 · 2023: 3 · 2022: 3 · 2021: 2 · 2020: 2
FWCI
1.11
Type
journal article
Language
en
Open access
Locations
  • Physical review. D/Physical review. D. (publishedVersion, cc-by)
  • arXiv (Cornell University) (submittedVersion)
  • mediaTUM – the media and publications repository of the Technical University Munich (Technical University Munich) (submittedVersion, other-oa)
  • arXiv (Cornell University)
Funders
Deutsche Forschungsgemeinschaft
Topics
  • Physical Sciences › Physics and Astronomy › Nuclear and High Energy Physics › Particle physics theoretical and experimental studies
  • Physical Sciences › Physics and Astronomy › Nuclear and High Energy Physics › Black Holes and Theoretical Physics
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Cosmology and Gravitation Theories
Keywords
false vacuum decay, gradient correction, thin-wall approximation, effective action, radiative corrections, bubble nucleation, Goldstone bosons, wave function renormalization, one-loop corrections, decay rate

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