Nonrestoration of spontaneously broken P, CP and PQ at high temperature
Fecha
2005-01-06Palabras Clave
Distribuciones autogravitantes, Física de alta energía, Fenomenología, Teoría cuántica de camposHigh energy physics, Phenomenology, Physics, Field theory
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Nonrestoration of spontaneously broken P, CP and PQ at high temperature
(Melfo, Alejandra; Dvali, Gia; Senjanovic, Goran)
Abstract
The possibility of P and CP violation at high temperature in models where these symmetries are spontaneously broken is investigated. It is found that in minimal models that include singlet fields, high T nonrestoration is possible for a wide range of parameters of the theory, in particular in models of CP violation with a CP-odd Higgs field. The same holds true for the invisible axion version of the Peccei-Quinn mechanism. This can provide both a way out for the domain wall problem in these theories and the CP violation required for baryogenesis. In the case of spontaneous P violation it turns out that high T nonrestoration requires going beyond the minimal model.The results are shown to hold true when next-to-leading order effects are considered.
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Correo Electrónico | melfo@ula.ve goran@ictp.trieste.it dvali@surya11.cern.ch |
Editor | SABER ULA |
Idioma | Inglés |