Cosmic strings and electroweak baryogenesis
نویسندگان
چکیده
منابع مشابه
Electroweak Baryogenesis with Cosmic Strings? Electroweak Baryogenesis with Cosmic Strings?
I report on a critical analysis of the scenario of electroweak baryoge-nesis mediated by nonsuperconducting cosmic strings. This mechanism relies upon electroweak symmetry restoration in a region around cosmic strings, where sphalerons would be unsuppressed. I discuss the various problems this scenario has to face, presenting a careful computation of the sphaleron rates inside the strings, of t...
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If stable electroweak strings are copiously produced during the electroweak phase transition, they may contribute significantly to the presently observed baryon to entropy ratio of the universe. This analysis establishes the feasibility of implementing an electroweak baryogenesis scenario without a first order phase transition.
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We demonstrate the viability of baryogenesis from light scalar decays after the electroweak phase transition. A hidden fourth generation of quarks and leptons is used to introduce extra CP violations to the standard model. A simple extension of the standard model is constructed in which cosmic strings are formed at the electroweak phase transition. These strings decay into colored scalars which...
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ژورنال
عنوان ژورنال: Physics Letters B
سال: 1994
ISSN: 0370-2693
DOI: 10.1016/0370-2693(94)91402-8