Where new gravitational physics comes from: M-theory?

被引：319

作者：

Nojiri, S ^{[1
]}

Odintsov, SD

机构：

[1] Natl Def Acad, Dept Appl Phys, Yokosuka, Kanagawa 2398686, Japan

[2] Inst Estudis Espacials Catalunya, Barcelona 08034, Spain

[3] ICREA, Barcelona, Spain

来源：

PHYSICS LETTERS B | 2003年 / 576卷 / 1-2期

关键词：

D O I：

10.1016/j.physletb.2003.09.091

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

It is suggested [astro-ph/0306438] that current cosmic acceleration arises due to modification of general relativity by the terms with negative powers of curvature. We argue that time-dependent (hyperbolic) compactifications of (4 + n)-dimensional gravity (string/M-theory) lead to the effective 4d gravity which naturally contains such terms. The same may be achieved in the braneworld by the proper choice of the boundary action. Hence, such a model which seems to eliminate the need for dark energy may have the origin in M-theory. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：5 / 11

页数：7

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