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Nonrestoration of spontaneously broken P, CP and PQ at high temperature

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arxiv hep-ph/9601376 v2 pith:DC2VW7BT submitted 1996-01-30 hep-ph astro-ph

Nonrestoration of spontaneously broken P, CP and PQ at high temperature

Gia Dvali , Alejandra Melfo , Goran Senjanovic This is my paper
classification hep-ph astro-ph
keywords highviolationmodelsnonrestorationbrokenminimalspontaneouslytemperature
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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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Cited by 3 Pith papers

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