2017/01/31 by Sujay Kr. Biswas, Subenoy Chakraborty
Physics and Astronomy · #Barotropic fluid #Black Holes and Theoretical Physics #Brane #Classical mechanics #Cosmology #Cosmology and Gravitation Theories #Dark energy #Dark fluid #Dark matter #Equation of state #Friedmann equations #Friedmann–Lemaître–Robertson–Walker metric #Galaxies: Formation, Evolution, Phenomena #Particle physics #Physics #Quantum mechanics #Scalar field #Scalar field dark matter #Theoretical physics #physics.gen-ph
paper · pdf · doi:10.1142/s0219887819501159
26 pages, 11 captioned figures. Version is accepted for publication in IJGMMP
openalex publication_date 2019/05/15 · arxiv created 2019/06/20 · arxiv updated 2019/06/21 · openalex created_date 2019/06/27 · openalex updated_date 2026/08/05
The present work is a second in the series of investigations of the background dynamics in brane cosmology when dark energy is coupled to dark matter by a suitable interaction. Here, dark matter is chosen in the form of perfect fluid with barotropic equation of state, while a real scalar field with self-interacting potential is chosen as dark energy. The scalar field potential is chosen as exponential or hyperbolic in nature and three different choices for the interactions between the dark species are considered. In the background of spatially flat, homogeneous and isotropic Friedmann–Robertson–Walker (FRW) brane model, the evolution equations are reduced to an autonomous system by suitable transformation of variables and a series of critical points are obtained for different interactions. By analyzing the critical points, we have found a cosmologically viable model describing an early inflationary scenario to dark energy-dominated era connecting through a matter-dominated phase.