54 citations · 380 across the 32 of their papers we have counts for
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Stationary Stars Are Axisymmetric in Higher Curvature Gravity
Nitesh K. Dubey, Sanved Kolekar, Sudipta Sarkar
The final equilibrium stage of stellar evolution can result in either a black hole or a compact object such as a white dwarf or neutron star. In general relativity, both stationary…
Kinematics of Acceleration-Induced Excitations in Confined Quantum Fields
Hemansh Shah, Sanved Kolekar
We investigate quantum field excitations in a rigid cavity that undergoes a transition from inertial motion to uniform acceleration while maintaining constant proper length. By con…
Quantum Field Theory in Successive Rindler Spacetimes
Nitesh K. Dubey, Jaswanth Uppalapati, Sanved Kolekar
We study successive Rindler-like transformations in Minkowski spacetime and the corresponding sequence of vacuum states perceived by observers restricted to respective wedges. Exte…
Memory Effects and Entanglement Dynamics of Finite time Acceleration
Nitesh K. Dubey, Sanved Kolekar
We construct a smooth trajectory in Minkowski spacetime that is inertial in the asymptotic past and future but undergoes approximately uniform acceleration for a finite duration. I…
Isentropic processes for axisymmetric Black Holes
Nitesh K. Dubey, Sanved Kolekar
We demonstrate that the isentropic absorption of a classical charged test particle is classically forbidden for all 3+1 dimensional stationary, non-extremal, axisymmetric black hol…
Probing Generalized Emergent Dark Energy with DESI DR2
Vipin kumar Sharma, Himanshu Chaudhary, Sanved Kolekar
As an update on the initial findings of DESI, the new results provide the first hint of potential deviations from a cosmological constant (), which, if confirmed with signifi…
Harvesting Fermionic Field Entanglement in Schwarzschild Spacetime
Nitesh Kumar Dubey, Sanved Kolekar
We explore entanglement harvesting using two Unruh-DeWitt (UDW) detectors linearly coupled to the scalar density of a massless spin-1/2 field in 1+1 Schwarzschild spacetime. We con…
Gravitational physics in the context of Indian astronomy: A vision document
P. Ajith, K. G. Arun, Sukanta Bose +13
Contributions from the Indian gravity community have played a significant role in shaping several branches of astronomy and astrophysics. This document reviews some of the most imp…