2019/10/31 by Abhijit Bandyopadhyay, Anirban Chatterjee · 10 citations
Physics and Astronomy · #Context (archaeology) #Cosmology #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Dark energy #Dark fluid #Dark matter #Equation of state #Gamma-ray bursts and supernovae #Scalar field #Scalar field dark matter #Supernova #astro-ph.CO #gr-qc
paper · pdf · doi:10.1088/1674-4527/21/1/2
published in Research in Astronomy and Astrophysics 21(1), 002 (IOP Publishing) · 14 pages, 7 figures; Accepted for publication in Research in Astronomy and Astrophysics
openalex created_date 2019/11/01 · arxiv created 2020/06/09 · openalex publication_date 2021/01/01 · arxiv updated 2021/01/11 · openalex updated_date 2026/08/06
Abstract We investigated the scenario of time-dependent diffusive interaction between dark matter and dark energy and showed that such a model can be accommodated within the observations of luminosity distance-redshift data in Supernova Ia (SN Ia) observations. We obtain constraints on different relevant parameters of this model from the observational data. We consider a homogeneous scalar field ϕ ( t ) driven by a k -essence Lagrangian of the form L = V ( ϕ ) F ( X ) with constant potential V ( ϕ ) = V , to describe the dynamics of dark energy in this model. Using the temporal behaviour of the FRW scale factor, the equation of state and total energy density of the dark fluid, extracted from the analysis of SN Ia (JLA) data, we have obtained the time-dependence of the k -essence scalar field and also reconstructed the form of the function F ( X ) in the k -essence Lagrangian.