Vishnu A Pai

activity

20232026

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gr-qc2025

Cosmology with non-linear barotropic Israel-Stewart fluid with causal relaxation time

Vishnu A Pai, Titus K Mathew

We derive an extended expression for the relaxation time of a barotropic Israel-Stewart (IS) fluid using the non-linear causality constraint, and propose a new formulation for mode…

astro-ph.CO2025

$Λ$ vCF: Extending $Λ$ CDM into a Unified Model with Particle Creation

Vishnu A Pai, Titus K Mathew

We present a novel extended version of the $Λ$ CDM model that provides analytical solution for Hubble parameter uniting all epochs of cosmic evolution starting from inflation to lat…

Cosmology with non-linear barotropic Israel-Stewart fluid with causal relaxation time

ΛvCF: Extending ΛCDM into a Unified Model with Particle Creation

$Λ$ vCF: Extending $Λ$ CDM into a Unified Model with Particle Creation