104 citations · 1.2k across the 72 of their papers we have counts for
8 papers · 1 filter
Quantum corrections enhance chaos: study of particle motion near a generalized Schwarzschild black hole
Avijit Bera, Surojit Dalui, Subir Ghosh +1
The paper is devoted to a detailed study of the effects of quantum corrections on the chaotic behavior in the dynamics of a (massless) probe particle near the horizon of a generali…
Non-trivial time crystal-like ground state for gravitational perturbation in quadratic gravity
Sumanta Chakraborty, Subir Ghosh
We consider gravitational perturbation around maximally symmetric background of a theory of gravity involving quadratic curvature correction. This leads to a decoupled model of the…
Motion of charged particle in Reissner-Nordstrom spacetime: A Jacobi metric approach
Praloy Das, Ripon Sk, Subir Ghosh
The present work discusses motion of neutral and charged particles in Reissner - Nordstrom spacetime. The constant energy paths are derived in a variational principle framework usi…
Effects of a Maximal Energy Scale in Thermodynamics for Photon Gas and Construction of Path Integral
Sudipta Das, Souvik Pramanik, Subir Ghosh
In this article, we discuss some well-known theoretical models where an observer-independent energy scale or a length scale is present. The presence of this invariant scale necessa…
Quantum Gravity Effects in Geodesic Motion and Predictions of Equivalence Principle Violation
Subir Ghosh
We show that the Equivalence Principle (EP) is violated by Quantum Gravity (QG) effects. The predicted violations are compared to experimental observations for Gravitational Redshi…
Gauge Invariant Extension of Linearized Horava Gravity
Sudipta Das, Subir Ghosh
In the present paper we have constructed a gauge invariant extension of a generic Horava Gravity (HG) model (with quadratic curvature terms) in linearized version in a systematic p…
Generalized particle dynamics: modifying the motion of particles and branes
Sudipta Das, Subir Ghosh, Jan-Willem van Holten +1
We construct a generalized dynamics for particles moving in a symmetric space-time, i.e. a space-time admitting one or more Killing vectors. The generalization implies that the eff…
Remarks on the Generalized Chaplygin Gas
Rabin Banerjee, Subir Ghosh, Shailesh Kulkarni
We have developed an action formulation for the Generalized Chaplygin Gas (GCG). The most general form for the nonrelativistic GCG action is derived consistent with the equation of…