4 papers
Universality of Quasinormal-Mode Shifts from Small Nonlocal Effective Couplings
Anisur Rahaman
We investigate perturbative quasinormal-mode (QNM) shifts of black holes arising from fractional, nonlocal modifications to the wave operator. Starting from a scalar master equatio…
Radiative transition of an atom falling into spherically symmetric Lorentz violating black hole background
Anisur Rahaman
In this work, we explore the intriguing phenomenon of acceleration radiation exhibited by an atom falling into a black hole, as previously studied in Phys. Rev. Lett. 121, 071301 (…
An atom in front of Lorentz violating Kalb-Ramond black hole background
Anisur Rahaman
We investigate the role of Lorentz violation in the acceleration radiation produced when an atom falls into a Kalb-Ramond (KR) black hole and observe that the amplitude and an expo…
Non-Minimal RT Coupling and its Impact on Inflationary Evolution in f(R, T) Gravity
Sohan Kumar Jha, Anisur Rahaman
We examine inflationary models in the gravity framework where we have a conformal constant and an -mixing term apart from an R term. The RT-mixing term introduces non…