2 papers
astro-ph.CO2025
Disformal interactions in the Dark Sector: From driving Early Dark Energy to confronting cosmological tensions
Pulkit Bansal, Joseph P. Johnson, S. Shankaranarayanan
The CDM model faces significant challenges, including an incomplete understanding of the dark sector and persistent tensions in the Hubble constant and the clustering amplitude…
astro-ph.CO2024
Interacting dark sector from Horndeski theories and beyond: Mapping fields and fluids
Pulkit Bansal, Joseph P Johnson, S. Shankaranarayanan
In Cosmology, when dissipative effects are minimal, the energy content of the Universe can be effectively described as a sum of perfect fluids. Perfect fluid descriptions ensure th…