activity
20202026
most citedRuppeiner Geometry, Reentrant Phase transition and Microstructure of Born-Infeld AdS Black Hole

34 citations · 179 across the 16 of their papers we have counts for

collaborators

16 papers

gr-qc2026

Spectral Bifurcations in Quasinormal Modes of Regular BTZ Black Holes

Kartheek Hegde, Tajron Jurić, A. Naveena Kumara

We study the quasinormal spectrum of massless scalar fields propagating on a family of regular BTZ black holes arising from an infinite tower of dimensionally regularized Lovelock…

gr-qc2025★ 5 cited

Euclidean Thermodynamics and Lyapunov Exponents of Einstein-Power-Yang-Mills AdS Black Holes

Karthik R., Dillirajan D., K. M. Ajith +3

We study the thermodynamics of Einstein-Power-Yang-Mills AdS black holes via the Euclidean path integral method, incorporating appropriate boundary and counterterms. By analyzing u…

gr-qc2024★ 5 cited

Perturbations of Black Holes Surrounded by Anisotropic Matter Field

Sagar J C, Karthik R, Katheek Hegde +3

Our research aims to probe the anisotropic matter field around black holes using black hole perturbation theory. Black holes in the universe are usually surrounded by matter or fie…

gr-qc2024★ 1 cited

Spinning LQG black hole as a particle accelerator

Ullas P. Suresh, Karthik R, K. M. Ajith +3

We demonstrate that the spinning LQG black hole can act as a cosmic particle accelerator. The LQG solution is singularity-free and can possess spin greater than that of a Kerr blac…

gr-qc2021★ 2 cited

Dynamics and kinetics of phase transition for regular AdS black holes in general relativity coupled to non-linear electrodynamics

A. Naveena Kumara, Shreyas Punacha, Kartheek Hegde +3

Employing the free energy landscape, we study the phase transition and its dynamics for a class of regular black holes in Anti-de Sitter spacetime governed by the coupling of non-l…

gr-qc2021★ 3 cited

Greybody factor for an electrically charged regular-de Sitter black holes in -dimensions

Md Sabir Ali, A. Naveena Kumara, Kartheek Hegde +3

We investigate the propagation of scalar fields in the gravitational background of higher-dimensional, electrically charged, regular de Sitter black holes. Using an approximate ana…

gr-qc2021★ 2 cited

Thermodynamics, photon sphere and thermodynamic geometry of Ayón-Beato-García Spacetime

Kartheek Hegde, A. Naveena Kumara, C. L. Ahmed Rizwan +3

We study the thermodynamics of the Ayón-Beato-García black hole and the relationship between photon orbits and the thermodynamic phase transitions of the black hole in AdS spacetim…

gr-qc2020★ 19 cited

Coexistent Physics and Microstructure of the Regular Bardeen Black Hole in Anti-de Sitter Spacetime

C. L. Ahmed Rizwan, A. Naveena Kumara, Kartheek Hegde +1

We study the phase structure and the microscopic interactions in regular Bardeen AdS black hole. The stable and metastable phases in the black hole are analysed through coexistence…

gr-qc2020★ 7 cited

Rotating Black Hole with an Anisotropic Matter Field as a Particle Accelerator

C. L. Ahmed Rizwan, A. Naveena Kumara, Kartheek Hegde +2

Recently, a generalised solution for Einstein equations of a rotating compact body, surrounded by matter field was proposed, which is the Kerr-Newman spacetime with an anisotropic…

gr-qc2020★ 20 cited

Null Geodesics and Thermodynamic Phase Transition of Four-Dimensional Gauss-Bonnet AdS Black Hole

Kartheek Hegde, A. Naveena Kumara, C. L. Ahmed Rizwan +2

Modified gravity theories are of great interest in both observational and theoretical studies. In this article we study the correlation between the null geodesics in the background…

gr-qc2020★ 34 cited

Ruppeiner Geometry, Reentrant Phase transition and Microstructure of Born-Infeld AdS Black Hole

A. Naveena Kumara, C. L. Ahmed Rizwan, Kartheek Hegde +2

Born-Infeld AdS black hole exhibits a reentrant phase transition for certain values of the Born-Infeld parameter . This behaviour is an additional feature compared to the van de…

gr-qc2020

Microstructure of five-dimensional neutral Gauss-Bonnet black hole in anti-de Sitter spacetime via criticality

A. Naveena Kumara, C. L. Ahmed Rizwan, Kartheek Hegde +2

In this article, we analytically investigate the microstructure of a five-dimensional neutral Gauss-Bonnet black hole, in the background of anti-de Sitter spacetime, using scalar c…

gr-qc2020★ 28 cited

Rotating 4D Gauss-Bonnet black hole as particle accelerator

A. Naveena Kumara, C. L. Ahmed Rizwan, Kartheek Hegde +2

We demonstrate that the four-dimensional Gauss-Bonnet black hole can act as a particle accelerator with arbitrarily high centre-of-mass energy, during the collision of two general…

gr-qc2020★ 9 cited

Microstructure and continuous phase transition of a regular Hayward black hole in anti-de Sitter spacetime

A. Naveena Kumara, C. L. Ahmed Rizwan, Kartheek Hegde +2

We study the phase transition of a regular Hayward-AdS black hole by introducing a new order parameter, the potential conjugate to the magnetic charge due to the non-linearly coupl…

gr-qc2020★ 28 cited

Repulsive Interactions in the Microstructure of Regular Hayward Black Hole in Anti-de Sitter Spacetime

A. Naveena Kumara, C. L. Ahmed Rizwan, Kartheek Hegde +1

We study the interaction between the microstructures of Hayward-AdS black hole using Ruppeiner geometry. Our investigation shows that the dominant interaction between the black hol…

gr-qc2020★ 16 cited

Thermodynamics, Phase Transition and Joule Thomson Expansion of 4-D Gauss-Bonnet AdS Black Hole

Kartheek Hegde, A. Naveena Kumara, C. L. Ahmed Rizwan +3

We explore the thermodynamic and phase transition properties of asymptotically AdS black holes within Einstein-Gauss-Bonnet gravity, focusing on Joule Thomson expansion. Thermodyna…