XXVI DAE-BRNS High Energy Physics Symposium 2024

CPL Parameterized Equation of State of Cubic, Quadratic and Linear Terms of ꓥCDM models

Not scheduled

20m

Swatantrata Bhavan, Banaras Hindu University, Varanasi

Postar Astroparticle physics and cosmology

Speaker

Priya Deb (Department of Physics, The ICFAI University Tripura)

Description

ABSTRACT

Generally the cosmological $ꓥ$CDM models are constructed with $𝑓(𝑎)∝a^3$. Considering a cubic function $𝑓(𝑎)$, the vacuum energy density is calculated and corresponding constraints are tuned with Chevallier-Polarski-Linder (CPL) equation of state parameterization. During the construction of the Problem the function $𝑓(𝑎)$ is assumed to be carrying cubic, quadratic and liner terms, so that the model behaves to carry a comparatively complex system to and accommodate different possible conditions to represent dark energy.
Keywords:- CPL Parameterization, $ꓥ$CDM model, Scale Factor