Asymmetric inflationary reheating and the nature of mirror universe

被引:293
作者
Berezhiani, ZG
Dolgov, AD
Mohapatra, RN
机构
[1] GEORGIAN ACAD SCI, INST PHYS, TBILISI 380077, GEORGIA
[2] UNIV VALENCIA, CSIC, IFIC, E-46100 BURJASSOT, VALENCIA, SPAIN
[3] INST THEORET & EXPTL PHYS, MOSCOW 117259, RUSSIA
[4] UNIV MARYLAND, DEPT PHYS, COLLEGE PK, MD 20742 USA
关键词
D O I
10.1016/0370-2693(96)00219-5
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The existence-of a shadow world (or mirror universe) with matter and forces identical to that of the visible world but interacting with the latter only via gravity can be motivated by superstring theories as well as by recent attempts to understand the nature of ii sterile neutrino needed if all known neutrino data art to be consistent with each other. A simple way to reconcile the constraints of big bang nucleosynthesis in such a theory is to postulate that the reheating temperature after inflation in the mirror universe is lower than that in the visible one. We have constructed explicit models that realize this proposal and have shown that the asymmetric reheating can be related to a difference of the electroweak symmetry breaking scales in the two sectors, which is needed for a solution of the neutrino puzzles in this picture, Cosmological implications of the mirror matter are also discussed.
引用
收藏
页码:26 / 36
页数:11
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