Anjan A. Sen

collaborators

2 papers

astro-ph.CO2026

Beyond $Λ$ CDM with a Logistic RG-like Flow of the Low Redshift Cosmic Evolution

Shibendu Gupta Choudhury, Anjan A Sen

Recent observations hint at possible late-time deviations from $Λ$ CDM. We introduce a minimal phenomenological framework in which the total equation of state $w_{T} (z)$ follows…

astro-ph.CO2026

Early- and Late-Time Modifications to $I^$ CDM: Implications for the Hubble Tension

Rahul Dhyani, Purba Mukherjee, Arindam Chatterjee +1

We investigate an extension of $I^$ CDM in which a fraction of cold Dark Matter (DM) decays into invisible dark radiation (DR) around the radiation-matter equality epoch, together w…

Beyond ΛCDM with a Logistic RG-like Flow of the Low Redshift Cosmic Evolution

Early- and Late-Time Modifications to I^CDM: Implications for the Hubble Tension

Beyond $Λ$ CDM with a Logistic RG-like Flow of the Low Redshift Cosmic Evolution

Early- and Late-Time Modifications to $I^$ CDM: Implications for the Hubble Tension