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Fading of symmetry nonrestoration at finite temperature
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Fading of symmetry nonrestoration at finite temperature
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| Gavela, María Belén; Pène, Olivier; Rius Dionis, Nuria Perfil; Vargas Castrillón, S. | |||
| This document is a artículoDate1999 | |||
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Este documento está disponible también en : http://hdl.handle.net/10550/42592 |
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| The fate of symmetries at high temperature determines the dynamics of the very early universe. It is conceivable that temperature effects favor symmetry breaking instead of restoration. Concerning global symmetries, the nonlinear sigma model is analyzed in detail. For spontaneously broken gauge symmetries, we propose the gauge boson magnetic mass as a 'flag' for symmetry (non)restoration. We consider several cases: the standard model with one and two Higgs doublers in the perturbative regime and the case of a strongly interacting Higgs sector. The latter is done in a model-independent way with the tools provided by chiral Lagrangians. Our results clearly point towards restoration, a pattern consistent with recent lattice computations for global symmetries. In addition, we explicitly verify Becchi-Rouet-Stora-Tyutin invariance for gauge theories at finite temperature | |||
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Gavela, María Belén Pène, Olivier Rius Dionis, Nuria Vargas Castrillón, S. 1999 Fading of symmetry nonrestoration at finite temperature Physical Review D 59 2 025008 |
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| http://dx.doi.org/10.1103/PhysRevD.59.025008 |
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22 - Física [3724]