Pre-big-bang inflation requires fine-tuning

被引：82
|
作者：
Turner, MS
Weinberg, EJ
机构：
[1] UNIV CHICAGO,ENRICO FERMI INST,DEPT PHYS,CHICAGO,IL 60637
[2] FERMILAB NATL ACCELERATOR LAB,NASA,FERMILAB ASTROPHYS CTR,BATAVIA,IL 60510
[3] COLUMBIA UNIV,DEPT PHYS,NEW YORK,NY 10027
[4] INST ADV STUDY,SCH NAT SCI,PRINCETON,NJ 08540
来源：
PHYSICAL REVIEW D | 1997年 / 56卷 / 08期
关键词：
D O I：
10.1103/PhysRevD.56.4604
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The pre-big-bang cosmology inspired by superstring theories has been suggested as an alternative to slow-roll inflation. We analyze, in both the Jordan and Einstein frames, the effect of spatial curvature on this scenario and show that too much curvature - of either sign - reduces the duration of the inflationary era to such an extent that the flatness and horizon problems are not solved. Hence, a fine-tuning of initial conditions is required to obtain enough inflation to solve the cosmological problems. [S0556-2821(97)01020-5].
引用
收藏
页码：4604 / 4609
页数：6
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