Exploring the effects of dark matter - dark energy interaction on cosmic evolution in viscous dark energy scenario

detalle del documento

IDENTIFICACIÓN

oai:arXiv.org:2411.13379

Tema

Astrophysics - Cosmology and Nonga... General Relativity and Quantum Cos... High Energy Physics - Phenomenolog...

Autor

Halder, Ashadul Pandey, Madhurima Basu, Rupa Majumdar, Debasish

Categoría

ciencias: astrofísica

Año

2024

fecha de cotización

27/11/2024

Palabras clave

model dark energy

Métrico

Resumen

We explore the influence of interactions between dark matter (DM) and dark energy (DE) on the cosmic evolution of the Universe within a viscous dark energy (VDE) framework.

Moving beyond traditional interacting dark energy (IDE) models, we propose a generalized IDE model adaptable to diverse IDE scenarios via IDE coupling parameters.

In order to investigate deviations from $\Lambda$CDM across cosmic epochs by highlighting how viscous and the interactions between DM and DE impact cosmic density and expansion rates, we consider a model agnostic form of VDE.

Eventually we perform a Bayesian analysis using the Union 2.1 Supernova Ia dataset and Markov Chain Monte Carlo (MCMC) sampling to obtain optimal values of model parameters.

This comprehensive analysis provides insights about the interplay between viscous and IDE in shaping the Universe's expansion history.

;Comment: 13 pages, 7 figures

Halder, Ashadul,Pandey, Madhurima,Basu, Rupa,Majumdar, Debasish, 2024, Exploring the effects of dark matter - dark energy interaction on cosmic evolution in viscous dark energy scenario