41 citations · 67 across the 9 of their papers we have counts for
6 papers · 1 filter
Gravitational wave propagation through viscous matter
Vishnu Kakkat, Ulrich K. Beckering Vinckers, Nigel T. Bishop +4
It has been known that gravitational waves (GWs) transfer energy to viscous matter through which they propagate, but the effect is too weak to be astrophysically significant. Using…
Spherically symmetric black holes in Gravity from Entropy and spontaneous emission
Udaykrishna Thattarampilly, Yunlong Zheng, Vishnu Kakkat
We investigate static and dynamical spherically symmetric black hole solutions within the Gravity from Entropy (GfE) framework. We derive and solve the modified vacuum field equati…
Inflation from entropy
Udaykrishna Thattarampilly, Yunlong Zheng
We investigate cosmological solutions for the modified gravity theory obtained from quantum relative entropy between the metric of spacetime and the metric induced by the geometry…
Gravitational-wave background in bouncing models from semi-classical, quantum and string gravity
Ido Ben-Dayan, Gianluca Calcagni, Maurizio Gasperini +4
We study the primordial spectra and the gravitational-wave background (GWB) of three models of semi-classical, quantum or string gravity where the big bang is replaced by a bounce…
Rotating black hole solutions for gravity and Newman Janis Algorithm
Pankaj Chaturvedi, Utkarsh Kumar, Udaykrishna Thattarampilly +1
We show that the -gravity theories with constant Ricci scalar in the Jordan/Einstein frame can be described by Einstein or Einstein-Maxwell gravity with a cosmological term a…
Sourced fluctuations in generic slow contraction
Michał Artymowski, Ido Ben-Dayan, Udaykrishna Thattarampilly
We introduce a set of generic conditions for the slow contracting Universe and for a narrowed-down category of models called fast-roll models. We present general conditions for sup…