Towards inflation in string theory

被引:977
作者
Kachru, S [1 ]
Kallosh, R
Linde, A
Maldacena, J
McAllister, L
Trivedi, SP
机构
[1] Stanford Univ, Dept Phys, Stanford, CA 94305 USA
[2] Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA
[3] Inst Adv Study, Princeton, NJ 08540 USA
[4] Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India
来源
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2003年 / 10期
关键词
inflation; string theory and cosmology;
D O I
10.1088/1475-7516/2003/10/013
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We investigate the embedding of brane inflation into stable compactifications of string theory. At first sight a warped compactification geometry seems to produce a naturally flat inflaton potential, evading one well known difficulty of brane-antibrane scenarios. Careful consideration of the closed string moduli reveals a further obstacle: superpotential stabilization of the compactification volume typically modifies the inflaton potential and renders it too steep for inflation. We discuss the non-generic conditions under which this problem does not arise. We conclude that brane inflation models can only work if restrictive assumptions about the method of volume stabilization, the warping of the internal space, and the source of inflationary energy are satisfied. We argue that this may not be a real problem, given the large range of available fluxes and background geometries in string theory.
引用
收藏
页码:227 / 258
页数:32
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