Regular Article - Theoretical Physics
Coupled dark energy: a dynamical analysis with complex scalar field
Instituto de Física, Universidade de São Paulo, Caixa Postal 66318, São Paulo, SP, 05314-970, Brazil
Accepted: 11 January 2016
Published online: 21 January 2016
The dynamical analysis for coupled dark energy with dark matter is presented, where a complex scalar field is taken into account and it is considered in the presence of a barothropic fluid. We consider three dark-energy candidates: quintessence, phantom, and tachyon. The critical points are found and their stabilities analyzed, leading to the three cosmological eras (radiation, matter, and dark energy), for a generic potential. The results presented here extend the previous analyses found in the literature.
© The Author(s), 2016