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arXiv · 2205.14946

Dynamics of interacting scalar field model in the realm of chiral cosmology

Trupti Patil·Sukanta Panda·Manabendra Sharma·Ruchika
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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.

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Trupti Patil, Sukanta Panda, Manabendra Sharma, Ruchika. 2022-05-30. Dynamics of interacting scalar field model in the realm of chiral cosmology. https://doi.org/10.1140/epjc/s10052-023-11259-7

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