Where new gravitational physics comes from: M-theory?

被引：317
|
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
收藏
页码：5 / 11
页数：7
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