Grand-Unified-Theory Baryogenesis after Preheating
نویسندگان
چکیده
منابع مشابه
Resurrection of grand unified theory baryogenesis.
A "new" scenario is proposed for baryogenesis. We show that the delayed decay of colored Higgs particles in grand unified theories may generate an excess baryon number of the empirically desired amount, if the mass of the heaviest neutrino is in the range 0.02 eV<m(nu(3))<0.8 eV, provided that neutrinos are of the Majorana type. The scenario accommodates the case of degenerate neutrino masses, ...
متن کاملElectroweak Baryogenesis from Preheating
The origin of the matter-antimatter asymmetry remains one of the most fundamental problems of cosmology. In this talk I present a novel scenario for baryogenesis at the electroweak scale, without the need for a first order phase transition. It is based on the out of equilibrium resonant production of long wavelength Higgs and gauge configurations, at the end of a period of inflation, which indu...
متن کاملPreheating, Supersymmetry Breaking, and Baryogenesis.
Fluctuations of scalar elds produced at the stage of preheating after in ation are so large that they can break supersymmetry much stronger than in ation itself. These uctuations may lead to symmetry restoration along at directions of the e ective potential even in the theories where the usual high temperature corrections are exponentially suppressed. Our results show that nonthermal phase tran...
متن کاملM ar 2 00 2 Resurrection of Grand Unified Theory Baryogenesis
A ‘new’ scenario is proposed for baryogenesis. We show that delayed decay of coloured Higgs particles in grand unified theories may generate excess baryon number of the empirically desired amount, if the mass of the heaviest neutrino is in the range 0.02 eV < mν3 < 0.8 eV, provided that neutrinos are of the Majorana type. The scenario accommodates the case of degenerate neutrino masses, in cont...
متن کاملElectroweak Baryogenesis at and after Preheating: What's the Difference? *
Two recent scenarios of preheating-related baryogenesis are compared within the framework of Abelian Higgs model in (1+1) dimensions. It is shown that they shift baryon number in opposite directions. Once both scenarios can realize simultaneously as overlapped stages of the same physical process, even the sign of net generated asymmetry becomes dependent on initial parameters. As it was shown r...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review Letters
سال: 1996
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.77.4290