Quintessential inflation on the brane and the relic gravity wave background

被引:100
作者
Sami, M [1 ]
Sahni, V [1 ]
机构
[1] IUCAA, Pune 411007, Maharashtra, India
来源
PHYSICAL REVIEW D | 2004年 / 70卷 / 08期
关键词
D O I
10.1103/PhysRevD.70.083513
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Quintessential inflation describes a scenario in which both inflation and dark energy (quintessence) are described by the same scalar field. In conventional braneworld models of quintessential inflation gravitational particle-production is used to reheat the universe. This reheating mechanism is very inefficient and results in an excessive production of gravity waves which violate nucleosynthesis constraints and invalidate the model. We describe a new method of realizing quintessential inflation on the brane in which inflation is followed by 'instant preheating' (Felder, Kofman & Linde 1999). The larger reheating temperature in this model results in a smaller amplitude of relic gravity waves which is consistent with nucleosynthesis bounds. The relic gravity wave background has a 'blue' spectrum at high frequencies and is a generic byproduct of successful quintessential inflation on the brane.
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页数:9
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