SCALE-INVARIANT EXTENDED INFLATION

被引:56
作者
HOLMAN, R
KOLB, EW
VADAS, SL
WANG, Y
机构
[1] FERMI NATL ACCELERATOR LAB,NASA,FERMILAB ASTROPHYS CTR,BATAVIA,IL 60510
[2] UNIV CHICAGO,DEPT PHYS,CHICAGO,IL 60637
[3] UNIV CHICAGO,ENRICO FERMI INST,CHICAGO,IL 60637
[4] UNIV CHICAGO,DEPT ASTRON & ASTROPHYS,CHICAGO,IL 60637
来源
PHYSICAL REVIEW D | 1991年 / 43卷 / 12期
关键词
D O I
10.1103/PhysRevD.43.3833
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We propose a model of extended inflation which makes use of the nonlinear realization of scale invariance involving the dilaton coupled to an inflaton field whose potential admits a metastable ground state. The resulting theory resembles the Jordan-Brans-Dicke version of extended inflation. However, quantum effects, in the form of the conformal anomaly, generate a mass for the dilaton, thus allowing our model to evade the problems of the original version of extended inflation. We show that extended inflation can occur for a wide range of inflaton potentials with no fine-tuning of dimensionless parameters required. Furthermore, we also find that it is quite natural for the extended-inflation period to be followed by an epoch of slow-rollover inflation as the dilaton settles down to the minimum of its induced potential.
引用
收藏
页码:3833 / 3845
页数:13
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