229 citations · 1.1k across the 54 of their papers we have counts for
25 papers · 1 filter
Spin-Graviton-Spin: a unique probe of quantum gravity
Radmehr Fathi, Nima Khosravi
The existence of quantum gravity is the most important question in theoretical physics. Besides the theoretical development in this direction, looking for its low-energy consequenc…
Gluing different gravitational models: case
Amin Aalipour, Nima Khosravi
This paper presents a comprehensive analysis of junction conditions for gluing different gravitational theories across a non-null hypersurface. Using the variational approac…
Anisotropy in constraint 4D Gauss-Bonnet gravity
Shahab Shahidi, Nima Khosravi
Recently a new 4D Einstein-Gauss-Bonnet theory has been introduced \textbf{[Phys. Rev. Lett. 124 (2020) 081301]} with a serious debate that it does not possess a covariant equation…
Hairy Waves: Gravitational Waves in the presence of Screening Mechanism
Matin Honardoost, Nima Khosravi, Nafiseh Rahmanpour
We consider a binary system in the context of screened modified gravity models and investigate its emitted gravitational wave which has been shown that is a hairy wave. We derive p…
Ghost-free higher order gravity from bi-gravity
Nima Khosravi, Reza Rajaee
In this work we studied the higher order gravity model which corresponds to Hassan-Rosen ghost-free bi-gravity. To do this we absorb one of the metrics in bi-gravity model in favor…
SO(4; 2) and derivatively coupled dRGT massive gravity
Nafiseh Rahmanpour, Nima Khosravi, Babak Vakili
In this paper we study the possibility of assigning a geometric structure to the Lie groups. It is shown the Poincaré and Weyl groups have geometrical structure of the Riemann-Cart…