Linear and nonlinear perturbations in dark energy models

被引:210
作者
Amendola, L [1 ]
机构
[1] INAF, Osservatorio Astron Roma, I-00040 Rome, Italy
来源
PHYSICAL REVIEW D | 2004年 / 69卷 / 10期
关键词
D O I
10.1103/PhysRevD.69.103524
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
I present linear and second-order perturbation theory in dark energy models with an explicit interaction to matter in view of its application to N-body simulations and nonlinear phenomena. Several new or generalized results are obtained: the general equations for the linear perturbation growth, an analytical expression for the bias induced by a species-dependent interaction, the Yukawa correction to the gravitational potential due to dark energy interaction, and the second-order perturbation equations in coupled dark energy and their Newtonian limit. I also show that a density-dependent effective dark energy mass arises if the dark energy coupling is varying.
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页数:10
相关论文
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