Dilatons in string cosmology

被引：56

作者：

Kaloper, Nemanja ^{[1
]}

Olive, Keith A. ^{[1
]}

机构：

[1] Univ Minnesota, Tate Lab Phys, Sch Phys & Astron, Minneapolis, MN 55455 USA

来源：

ASTROPARTICLE PHYSICS | 1993年 / 1卷 / 02期

关键词：

D O I：

10.1016/0927-6505(93)90021-5

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We consider the evolution of the dilaton in a Friedmann-Robertson-Walker background by numerically integrating the equations of motion as determined by the low-energy expansion of the string theory action. We find that the dilaton may be fixed by either self-interaction terms providing a dilaton mass or decoupling in a radiation dominated Universe. We also comment on conditions applicable to an exponentially expanding phase.

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页码：185 / 193

页数：9

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