Dynamics of interacting scalar field model in the realm of chiral cosmology
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 investigat...
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th-mahidol.818462023-05-19T14:42:29Z Dynamics of interacting scalar field model in the realm of chiral cosmology Patil T. Mahidol University Engineering 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. 2023-05-19T07:42:29Z 2023-05-19T07:42:29Z 2023-02-01 Article European Physical Journal C Vol.83 No.2 (2023) 10.1140/epjc/s10052-023-11259-7 14346052 14346044 2-s2.0-85148053276 https://repository.li.mahidol.ac.th/handle/123456789/81846 SCOPUS |
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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. |
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Dynamics of interacting scalar field model in the realm of chiral cosmology |
title_short |
Dynamics of interacting scalar field model in the realm of chiral cosmology |
title_full |
Dynamics of interacting scalar field model in the realm of chiral cosmology |
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Dynamics of interacting scalar field model in the realm of chiral cosmology |
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Dynamics of interacting scalar field model in the realm of chiral cosmology |
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dynamics of interacting scalar field model in the realm of chiral cosmology |
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2023 |
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https://repository.li.mahidol.ac.th/handle/123456789/81846 |
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