Solving the hierarchy problem in two-brane cosmological models

被引：30

作者：

Kanti, P ^{[1
]}

Olive, KA ^{[1
]}

Pospelov, M ^{[1
]}

机构：

[1] Univ Minnesota, Sch Phys & Astron, Inst Theoret Phys, Minneapolis, MN 55455 USA

来源：

PHYSICAL REVIEW D | 2000年 / 62卷 / 12期

关键词：

D O I：

10.1103/PhysRevD.62.126004

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We analyze cosmological solutions in the class of two-brane models with arbitrary tensions which contain matter with general equations of state. We show that the mass hierarchy between the two branes is determined by the ratio of the lapse functions evaluated on the branes. This ratio can be sufficiently small without fine-tuning the brane separation, once the transverse dimension is stabilized. For suitably large interbrane separations, both brane tensions are positive. We also find that the cosmological evolution obeys the standard four-dimensional Friedmann equation up to small corrections.

引用

页码：1 / 10

页数：10

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