Shortest cut in brane cosmology

被引：25

作者：

Abdalla, E

Cuadros-Melgar, B

Feng, SS

Wang, B

机构：

[1] Univ Sao Paulo, Inst Fis, BR-05315970 Sao Paulo, Brazil

[2] Univ Sci & Technol China, Dept Astron & Appl Phys, Hefei 230026, Peoples R China

[3] Fudan Univ, Dept Phys, Div Theory, Shanghai 200433, Peoples R China

来源：

PHYSICAL REVIEW D | 2002年 / 65卷 / 08期

关键词：

D O I：

10.1103/PhysRevD.65.083512

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We consider brane cosmology, studying the shortest null path on the brane for photons, and in the bulk for gravitons. We derive the differential equation for the shortest path in the bulk for a 1+4 cosmological metric. The time cost and the redshifts for photons and gravitons after traveling their respective paths are compared. We consider some numerical solutions of the shortest path equation, and show that there is no shortest path in the bulk for the Randall-Sundrum vacuum brane solution, for the linear cosmological solution of Binetruy for omega=-1,-2/3, and for some expanding brane universes.

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收藏

页码：835121 / 835128

页数：8

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