A. Rana

collaborators

2 papers

astro-ph.CO2025

Spectral Chebyshev Approximation of Cosmic Expansion in $f (R)$ Gravity

Akshay Rana

We present a numerical framework to study the cosmological background evolution in $f (R)$ gravity by employing a \textit{spectral Chebyshev collocation approach}. Unlike standard i…

astro-ph.CO2025

Testing the Constancy of Type Ia Supernova Luminosities with Gaussian Process

Akshay Rana

Type Ia supernovae (SNe~Ia) are central to studies of cosmic expansion, under the assumption that their absolute magnitude $M_{B}$ does not evolve with redshift. Even small drifts in…

Spectral Chebyshev Approximation of Cosmic Expansion in f(R) Gravity

Testing the Constancy of Type Ia Supernova Luminosities with Gaussian Process

Spectral Chebyshev Approximation of Cosmic Expansion in $f (R)$ Gravity