Zobrazeno 1 - 10
of 41
pro vyhledávání: '"Dalui, Surojit"'
We investigate chaos in the dynamics of outgoing massless particles near the horizon of static spherically symmetric (SSS) black holes in two well-motivated models of $f(R)$ gravity. In both these models, we probe chaos in the particle trajectories (
Externí odkaz:
http://arxiv.org/abs/2405.09945
Publikováno v:
Phys.Lett.B 856 (2024) 138929
We compute the Lyapunov exponents for test particles orbiting in unstable circular trajectories around D-dimensional Reissner-Nordstr\"om (RN) black holes, scrutinizing instances of the chaos bound violation. Notably, we discover that an increase in
Externí odkaz:
http://arxiv.org/abs/2404.18193
In this paper, we propose a new Analogue Gravity example - a spinning (or Kerr) Black Hole in an extended fluid model. The fluid model receives Berry curvature contributions and applies to electron dynamics in Condensed Matter lattice systems in the
Externí odkaz:
http://arxiv.org/abs/2402.15540
Autor:
Das, Surajit, Dalui, Surojit
This article is devoted to investigate the effects of $f(R)$ theory in the dynamics of a massless particle near the horizon of a static spherically symmetric (SSS) black hole. Deriving the equations of motion within $f(R)$ gravitational theories, nov
Externí odkaz:
http://arxiv.org/abs/2312.00449
The present paper is based on a previous work (involving two of the present authors) where a generalized fluid dynamical model was proposed. The underlying symplectic structure of the Lagrangian discrete degrees of freedom obeyed a Non-Commutative al
Externí odkaz:
http://arxiv.org/abs/2306.12201
Dynamical properties of a generic null surface are known to have a thermodynamic interpretation. Such an interpretation is completely based on an analogy between the usual law of thermodynamics and structure of gravitational field equation on the sur
Externí odkaz:
http://arxiv.org/abs/2110.12665
Publikováno v:
Phys.Lett.B 829 (2022) 137033
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 generalized Schwarzschild black hole. Two possible origins inducing the modifi
Externí odkaz:
http://arxiv.org/abs/2109.00330
Autor:
Dalui, Surojit, Majhi, Bibhas Ranjan
The validity of our already proposed conjecture -- {\it horizon creates a local instability which acts as the source of the quantum temperature of black hole} -- is being tested here for Kerr black hole. Earlier this has been explicitly shown for sph
Externí odkaz:
http://arxiv.org/abs/2103.11613
Autor:
Dalui, Surojit, Majhi, Bibhas Ranjan
Publikováno v:
Phys. Rev. D 102, 124047 (2020)
We revisit our previous proposed conjecture -- horizon creates a local instability which acts as the source of quantum temperature of black hole. It is found that a chargesless massless particle moving along the null trajectory in Eddington-Finkelste
Externí odkaz:
http://arxiv.org/abs/2007.14312
Publikováno v:
Phys. Rev. D 102, 044006 (2020)
The classical Hamiltonian for a chargeless and massless particle in a very near horizon region is shown to be of the form $H\sim xp$ as long as radial motion is concerned. This is demonstrated explicitly for static spherically symmetric black hole an
Externí odkaz:
http://arxiv.org/abs/1910.07989