arXiv subjects

M. Haditale

Publications and source records attributed to M. Haditale.

3 recordsLinked to original sources

arXiv2026

Geodesics Structure and Light Deflection of Regular Phantom Black Hole

The geodesic structure of Regular Phantom Black Holes (\textbf{RPBH}) space--time is analyzed and discussed in three asymptotically cases: Flat, de Sitter (\textbf{dS}), and Anti--de Sitter (\textbf{AdS}). The impact of the important scale parameter $b$\footnote{This parameter determines the coupling strength between phantom field and gravity.} on the trajectory of particles is studied and investigated which can mimic repulsion or attraction. By virtue of Effective Potential (\textbf{EP}) tool, the circular orbits and their stability are discussed. Also, in the asymptotically flat spacetime, the angle of light deflection versus the scale parameter is presented.

gr-qc↗

arXiv2026

Geodesics Structure and Thermodynamic Properties of Gaussian Black Hole in Quadratic Ricci Scaler Gravity

The geodesic structure and thermal properties of Gaussian Black Holes (\textbf{GBH})s in modified and Einstein gravities are studied and compared. In the geodesic part, motion of a test particle (massive and massless) are discussed, specially properties of the circular motion are considered. In the thermodynamic part, the mass, entropy and temperature functions are considered and discussed. The local and global stability is also analyzed through the Heat Capacity (\textbf{HC}) and Gibbs Energy (\textbf{GE}). The results show the thermodynamic differences are more than geodesic ones in the two theories of gravity with the note that the modified gravity is more consistent with the physical world.

gr-qc↗

arXiv2023

The null geodesics of charged and non-charged black hole in mimetic gravity

The null geodesics around the charged black hole spacetimes are investigated in the mimetic gravity framework when Einstein's gravity is coupled to a nonlinear electromagnetic field. The photon paths in nonlinear electrodynamics are geodesics of the effective metric which is determined by the background metric and the particular nonlinear theory considered. The nonlinear effects are represented by a quadruple moment and appear as a correction term to Reissner Nordstrom (RN) metric and Reissner Nordstrom-anti-de Sitter (RN-(A)dS) in cylindrical metric. Remarkably, the nonlinear effects prevent the circular orbits around black holes, and the presence of the mimetic field can change the repulsive character of dS space to the attractive one. Also, the effect of the mimetic parameter manifests itself in the stronger or weaker gravity of the black hole.

gr-qc↗