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On the gauge dependence of vacuum transitions at finite temperature
In principle, observables as for example the sphaleron rate or the tunneling rate in a first-order phase transition are gauge-independent. However, in practice a gauge dependence is introduced in explicit perturbative calculations due to the breakdown of the gradient expansion of the effective actio...
Autores principales: | , |
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Lenguaje: | eng |
Publicado: |
2012
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Materias: | |
Acceso en línea: | https://dx.doi.org/10.1007/JHEP07(2012)189 http://cds.cern.ch/record/1449359 |
_version_ | 1780924885704376320 |
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author | Garny, Mathias Konstandin, Thomas |
author_facet | Garny, Mathias Konstandin, Thomas |
author_sort | Garny, Mathias |
collection | CERN |
description | In principle, observables as for example the sphaleron rate or the tunneling rate in a first-order phase transition are gauge-independent. However, in practice a gauge dependence is introduced in explicit perturbative calculations due to the breakdown of the gradient expansion of the effective action in the symmetric phase. We exemplify the situation using the effective potential of the Abelian Higgs model in the general renormalizable gauge. Still, we find that the quantitative dependence on the gauge choice is small for gauges that are consistent with the perturbative expansion. |
id | cern-1449359 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 2012 |
record_format | invenio |
spelling | cern-14493592019-09-30T06:29:59Zdoi:10.1007/JHEP07(2012)189http://cds.cern.ch/record/1449359engGarny, MathiasKonstandin, ThomasOn the gauge dependence of vacuum transitions at finite temperatureParticle Physics - PhenomenologyIn principle, observables as for example the sphaleron rate or the tunneling rate in a first-order phase transition are gauge-independent. However, in practice a gauge dependence is introduced in explicit perturbative calculations due to the breakdown of the gradient expansion of the effective action in the symmetric phase. We exemplify the situation using the effective potential of the Abelian Higgs model in the general renormalizable gauge. Still, we find that the quantitative dependence on the gauge choice is small for gauges that are consistent with the perturbative expansion.arXiv:1205.3392DESY 12-073CERN-PH-TH-2012-127oai:cds.cern.ch:14493592012-05-16 |
spellingShingle | Particle Physics - Phenomenology Garny, Mathias Konstandin, Thomas On the gauge dependence of vacuum transitions at finite temperature |
title | On the gauge dependence of vacuum transitions at finite temperature |
title_full | On the gauge dependence of vacuum transitions at finite temperature |
title_fullStr | On the gauge dependence of vacuum transitions at finite temperature |
title_full_unstemmed | On the gauge dependence of vacuum transitions at finite temperature |
title_short | On the gauge dependence of vacuum transitions at finite temperature |
title_sort | on the gauge dependence of vacuum transitions at finite temperature |
topic | Particle Physics - Phenomenology |
url | https://dx.doi.org/10.1007/JHEP07(2012)189 http://cds.cern.ch/record/1449359 |
work_keys_str_mv | AT garnymathias onthegaugedependenceofvacuumtransitionsatfinitetemperature AT konstandinthomas onthegaugedependenceofvacuumtransitionsatfinitetemperature |