Gravitational particle production in gravity theories with non-minimal derivative couplings

被引:43
|
作者
Koutsoumbas, George [1 ]
Ntrekis, Konstantinos [1 ]
Papantonopoulos, Eleftherios [1 ]
机构
[1] Natl Tech Univ Athens, Dept Phys, GR-15773 Zografos, Greece
关键词
modified gravity; inflation; CREATION;
D O I
10.1088/1475-7516/2013/08/027
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We study the gravitational production of heavy X-particles of mass of the order of the inflaton mass, produced after the end of inflation. We find that, in the presence of a derivative coupling of the inflaton field or of the X-field to the Einstein tensor, the number of gravitationally produced particles is suppressed as the strength of the coupling is increased.
引用
收藏
页数:22
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