Semiclassical approach to heterogeneous vacuum decay
Abstract
We derive the decay rate of an unstable phase of a quantum field theory in the presence of an impurity in the thin-wall approximation. This derivation is based on the how the impurity changes the (flat spacetime) geometry relative to case of pure false vacuum. Two examples are given that show how to estimate some of the additional parameters that enter into this heterogeneous decay rate. This formalism is then applied to the Higgs vacuum of the Standard Model (SM), where baryonic matter acts as an impurity in the electroweak Higgs vacuum. We find that the probability for heterogeneous vacuum decay to occur is suppressed with respect to the homogeneous case. That is to say, the conclusions drawn from the homogeneous case are not modified by the inclusion of baryonic matter in the calculation. On the other hand, we show that Beyond the Standard Model physics with a characteristic scale comparable to the scale that governs the homogeneous decay rate in the SM, can in principle lead to an enhanced decay rate.
- Authors:
-
- University of California, San Diego, La Jolla, CA (United States). Department of Physics
- Scuola Normale Superiore, Pisa (Italy)
- Publication Date:
- Research Org.:
- University of California, San Diego, La Jolla, CA (United States). Department of Physics
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1434586
- Grant/Contract Number:
- SC0009919
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of High Energy Physics (Online)
- Additional Journal Information:
- Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2015; Journal Issue: 12; Journal ID: ISSN 1029-8479
- Publisher:
- Springer Berlin
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Higgs Physics; Standard Model; Beyond Standard Model
Citation Formats
Grinstein, Benjamin, and Murphy, Christopher W. Semiclassical approach to heterogeneous vacuum decay. United States: N. p., 2015.
Web. doi:10.1007/JHEP12(2015)063.
Grinstein, Benjamin, & Murphy, Christopher W. Semiclassical approach to heterogeneous vacuum decay. United States. https://doi.org/10.1007/JHEP12(2015)063
Grinstein, Benjamin, and Murphy, Christopher W. Thu .
"Semiclassical approach to heterogeneous vacuum decay". United States. https://doi.org/10.1007/JHEP12(2015)063. https://www.osti.gov/servlets/purl/1434586.
@article{osti_1434586,
title = {Semiclassical approach to heterogeneous vacuum decay},
author = {Grinstein, Benjamin and Murphy, Christopher W.},
abstractNote = {We derive the decay rate of an unstable phase of a quantum field theory in the presence of an impurity in the thin-wall approximation. This derivation is based on the how the impurity changes the (flat spacetime) geometry relative to case of pure false vacuum. Two examples are given that show how to estimate some of the additional parameters that enter into this heterogeneous decay rate. This formalism is then applied to the Higgs vacuum of the Standard Model (SM), where baryonic matter acts as an impurity in the electroweak Higgs vacuum. We find that the probability for heterogeneous vacuum decay to occur is suppressed with respect to the homogeneous case. That is to say, the conclusions drawn from the homogeneous case are not modified by the inclusion of baryonic matter in the calculation. On the other hand, we show that Beyond the Standard Model physics with a characteristic scale comparable to the scale that governs the homogeneous decay rate in the SM, can in principle lead to an enhanced decay rate.},
doi = {10.1007/JHEP12(2015)063},
journal = {Journal of High Energy Physics (Online)},
number = 12,
volume = 2015,
place = {United States},
year = {Thu Dec 10 00:00:00 EST 2015},
month = {Thu Dec 10 00:00:00 EST 2015}
}
Web of Science
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