Hubble law and brane matter after ekpyrosis

被引：18

作者：

Enqvist, K

Keski-Vakkuri, E

Räsänen, S

机构：

[1] Univ Helsinki, Helsinki Inst Phys, FIN-00014 Helsinki, Finland

[2] Univ Helsinki, Dept Phys, FIN-00014 Helsinki, Finland

来源：

NUCLEAR PHYSICS B | 2001年 / 614卷 / 1-2期

基金：

芬兰科学院;

关键词：

D O I：

10.1016/S0550-3213(01)00412-6

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We study brane matter in the ekpyrotic scenario and observe that in order to obtain standard gravity on the visible brane, the tension of the visible brane should be positive. If the sizes of both the fifth dimension and the Calabi-Yau threefold are fixed, the Israel junction conditions do not allow time-dependent brane matter. Relaxing this constraint, it is possible to obtain approximately standard cosmology on the visible brane, with small corrections due to possible time-dependence of the Calabi-Yau threefold. (C) 2001 Published by Elsevier Science B.V.

引用

页码：388 / 401

页数：14

共 36 条

[1] NEW LIMITS ON THE VARIABILITY OF G FROM BIG-BANG NUCLEOSYNTHESIS [J].