Baryogenesis in models with a low quantum gravity scale

被引:78
作者
Benakli, K [1 ]
Davidson, S [1 ]
机构
[1] CERN, Div Theory, CH-1211 Geneva 23, Switzerland
关键词
D O I
10.1103/PhysRevD.60.025004
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We make generic remarks about baryogenesis in models where the scale M-s of quantum gravity is much below the Planck scale. These correspond to M-theory vacua with a large volume for the internal space. Baryogenesis is a challenge, particularly for M(s)less than or similar to 10(5) GeV, because there is an upper bound on the reheating temperature of the Universe, and because certain baryon number violating operators must be suppressed. We discuss these constraints for different values of M-s, and illustrate with a toy model the possibility of using horizontal family symmetries to circumvent them. [S0556-2821(99)06410-3].
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页数:9
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