학술논문
Dynamics of interacting scalar field model in the realm of chiral cosmology
Document Type
Working Paper
Author
Source
Eur. Phys. J. C 83, 131 (2023)
Subject
Language
Abstract
The strange behaviour of the universe's dark sector offers us the flexibility to address cosmological problems with different approaches. Using this flexibility, we consider a possible exchange of energy among the dark sector components as a viable candidate model. In the present work, we investigate the interaction between two scalar fields within the generalization of a two-component chiral cosmology. We also show that there exists a unique equivalence between fields and fluids description of interacting dark sector model. Later, a detailed analysis of the dynamics of the dark energy-dark matter model with coupling in both kinetic and potential parts has been performed using a method of qualitative analysis of dynamical systems. Moreover, the cosmological viability of this model is analyzed for the potential of an exponential form via the phase-space study of autonomous system for various cosmological parameters.
Comment: 21+6 pages, Supported New figures, Few modification, references added
Comment: 21+6 pages, Supported New figures, Few modification, references added