M-theory inflation from multi M5-brane dynamics

被引:106
作者
Becker, K [1 ]
Becker, M
Krause, A
机构
[1] Univ Utah, Dept Phys, Salt Lake City, UT 84112 USA
[2] Univ Maryland, Dept Phys, College Pk, MD 20742 USA
基金
美国国家科学基金会;
关键词
inflation; M-theory;
D O I
10.1016/j.nuclphysb.2005.03.011
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 derive inflation from M-theory on S-1/Z(2) via the non-perturbative dynamics of N M5-branes. The open membrane instanton interactions between the M5-branes give rise to exponential potentials which are too steep for inflation individually but lead to inflation when combined together. The resulting type of inflation, known as assisted inflation, facilitates considerably the requirement of having all moduli. except the inflaton, stabilized at the beginning of inflation. During inflation the distances between the M5-branes, which correspond to the inflatons, grow until they reach the size of the S-1/Z(2) orbifold. At this stage the M5-branes will reheat the universe by dissolving into the boundaries through small instanton transitions. Further flux and non-perturbative contributions become important at this late stage, bringing inflation to an end and stabilizing the moduli. We find that with moderate values for N, one obtains both a sufficient amount of e-foldings and the right size for the spectral index. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码:349 / 371
页数:23
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