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- Institute for Research in Fundamental SciencesIR578 papers
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63 papers · 1 filter
Path Integrated Geodesics and Distances
Nima Khosravi
In this paper, the quantum corrections to the kinematics of geometry, specifically geodesics, are presented. This is done by employing the path integral over the geodesics. Interes…
Gravitational Bound State Perturbations Inside Black Holes and Isospectrality
Hassan Firouzjahi, Kazem Rezazadeh, Masoud Molaei
We study the bound state solutions for the polar perturbations in the interior of the Schwarzschild black hole. It is shown that for a given value of the spherical harmonic index $…
Elliptically Polarized Plane Gravitational Waves
Masoud Molaei, Shant Baghram, Bahram Mashhoon
Exact plane gravitational radiation fields are presented within the framework of general relativity and their properties are described. The physics of nonlinear elliptically polari…
Local Peculiar Motions in McVittie and LTB Spacetimes
Masoud Molaei, Shant Baghram, Bahram Mashhoon
We consider two inhomogeneous cosmological models, namely, the flat McVittie spacetime and a simple specific LTB spacetime. Relative to the world line of a reference comoving obser…
McVittie-Plummer Spacetime: Plummer Sphere Immersed in the FLRW Universe
Javad Tabatabaei, Shant Baghram, Bahram Mashhoon
The McVittie-Plummer spacetime is a spherically symmetric inhomogeneous cosmological model that represents a spherical star system embedded in a standard FLRW cosmological model. W…
Local Limit of Nonlocal Gravity: Cosmological Perturbations
Javad Tabatabaei, Abdolali Banihashemi, Shant Baghram +1
We explore the cosmological implications of the local limit of nonlocal gravity, which is a classical generalization of Einstein's theory of gravitation within the framework of tel…