Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2003-10-08
Phys.Rev.Lett. 92 (2004) 101303
Physics
High Energy Physics
High Energy Physics - Phenomenology
4 pages, 2 figures, revtex4
Scientific paper
10.1103/PhysRevLett.92.101303
If inflaton couples very weakly to ordinary matter the reheating temperature of the universe can be lower than the electroweak scale. In this letter we show that the late reheating occurs in a highly non-uniform way, within narrow areas along the jets produced by ordinary particles originated from inflaton decays. Depending on inflaton mass and decay constant, the initial temperature inside the lumps of the overheated plasma may be large enough to trigger the unsuppressed sphaleron processes with baryon number non-conservation, allowing for efficient local electroweak baryogenesis.
Asaka Takehiko
Grigoriev Dmitri
Kuzmin Vadim
Shaposhnikov Mikhail
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