3 papers
astro-ph.CO2026
Cosmological perturbations with gravity scalarons : Galaxy power spectra and the scalaron mass
Abhijit Talukdar, Sanjeev Kalita, Shadab Alam
In this paper we study cosmological perturbations with gravity scalaron. We consider epoch of transition from early general relativity (GR) phase to late time non-GR phase o…
gr-qc2026
Unscreening of f(R) gravity near the galactic center black hole: Testability through pericenter shift below S0-2's orbit
Debojit Paul, Sanjeev Kalita, Abhijit Talukdar
General Relativity (GR) has been tested extensively in the solar system and is being tested in the new environment of the Galactic Centre (GC) black hole where the dimensionless gr…
astro-ph.CO2024
Big Bang Nucleosynthesis with gravity scalarons and astrophysical consequences
Abhijit Talukdar, Sanjeev Kalita
gravity is one of the serious alternatives of general relativity having a large range of astronomical consequences. In this work, we study Big Bang Nucleosynthesis (BBN) in…