Cosmology;
Thawing model;
Dark energy;
Dark matter;
Coupled quintessence;
COSMOLOGICAL CONSTANT;
COINCIDENCE;
D O I:
10.1007/s10714-016-2125-3
中图分类号:
P1 [天文学];
学科分类号:
0704 ;
摘要:
We consider the thawing model in the framework of coupled quintessence model. The effective potential has Z(2) symmetry which is broken spontaneously when the dark matter density becomes less than a critical value leading the quintessence equation of state parameter to deviate from -1. Conditions required for this procedure are obtained and analytical solution for the equation of state parameter is derived.