Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1995-11-03
Phys.Lett.B375:26-36,1996
Physics
High Energy Physics
High Energy Physics - Phenomenology
13 pages, LATEX, no figures (slight textual changes, few references added)
Scientific paper
10.1016/0370-2693(96)00219-5
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 a sterile neutrino needed if all known neutrino data are 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.
Berezhiani Zurab G.
Dolgov Alexander. D.
Mohapatra Rabindra N.
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