44 citations · 139 across the 19 of their papers we have counts for
19 papers
Lorentz contraction of electric field lines for a point charge in uniform motion
Petar Žugec, Davor Horvatić, Ivica Smolić
We examine a logical foundation of depicting a Lorentz contraction of a Coulomb field (an electric field of a point charge in uniform motion) by means of the 'Lorentz contracted' f…
Weighing the curvature invariants
Jan Dragašević, Ina Moslavac, Ivica Smolić
We prove several inequalities between the curvature invariants, which impose constraints on curvature singularities. Some of the inequalities hold for a family of spacetimes which…
Generalized Runcorn's theorem and crustal magnetism
Ivica Smolić
During the era of NASA's Apollo missions, Keith S. Runcorn proposed an explanation of discrepancy between the Moon's negligible global magnetic field and magnetized samples of luna…
Near-horizon aspects of black holes in quantum spacetime
Nikola Herceg, Tajron Jurić, A. Naveena Kumara +2
We give a short introduction to the formalism of noncommutative (twisted) differential geometry that is used to derive the equations of motion for the gravitational perturbation of…
Noncommutative quasinormal modes of Schwarzschild black hole
Nikola Herceg, Tajron Jurić, A. Naveena Kumara +2
We study gravitational perturbations of the Schwarzschild metric in the context of noncommutative gravity. and noncommutativity are introduced through a Moyal twist of…
Noncommutative Reissner-Nordström black hole from noncommutative charged scalar field
Marija Dimitrijević Ćirić, Tajron Jurić, Nikola Konjik +2
Within the framework of noncommutative (NC) deformation of gauge field theory by the angular twist, we first rederive the NC scalar and gauge field model from our previous papers a…
Hexadecapole at the heart of nonlinear electromagnetic fields
Ana Bokulić, Tajron Jurić, Ivica Smolić
In classical Maxwell's electromagnetism, monopole term of the electric field is proportional to , while higher order multipole terms, sourced by anisotropic sources, fall-o…
Towards gravitational QNM spectrum from quantum spacetime
Nikola Herceg, Tajron Jurić, Andjelo Samsarov +1
The effective potential for the axial mode of gravitational wave on noncommutative Schwarzschild background is presented. Noncommutativity is introduced via deformed Hopf algebra o…
Students' confusions about the electric field of a uniformly moving charge
Petar Žugec, Davor Horvatić, Ivica Smolić
In light of a recent direct experimental confirmation of a Lorentz contraction of Coulomb field (an electric field of a point charge in a uniform motion), we revisit some common co…
Generalizations and challenges for the spacetime block-diagonalization
Ana Bokulić, Ivica Smolić
Discovery that gravitational field equations may coerce the spacetime metric with isometries to attain a block-diagonal form compatible with these isometries, was one of the gems b…
Noncommutativity and logarithmic correction to the black hole entropy
Kumar S. Gupta, Tajron Jurić, Anđelo Samsarov +1
We study the noncommutative corrections to the entropy of the Reissner-Nordström black hole using a -deformed scalar probe within the brick-wall framework. The noncommutativity…
Stationary spacetimes with time-dependent real scalar fields
Edgardo Franzin, Ivica Smolić
In 1981 Wyman classified the solutions of the Einstein--Klein--Gordon equations with static spherically symmetric spacetime metric and vanishing scalar potential. For one of these…
Schwarzschild spacetime immersed in test nonlinear electromagnetic fields
Ana Bokulić, Ivica Smolić
Kerr black hole immersed in test, asymptotically homogeneous magnetic field, aligned along the symmetry axis, is described by Wald's solution. We show how the static case of this s…
Noncommutativity and the Weak Cosmic Censorship
Kumar S. Gupta, Tajron Jurić, Andjelo Samsarov +1
We show that a noncommutative massless scalar probe can dress a naked singularity in spacetime, consistent with the weak cosmic censorship. The dressing occurs at high ener…
Generalizations of the Smarr formula for black holes with nonlinear electromagnetic fields
Luka Gulin, Ivica Smolić
We present a direct, geometric derivation of the generalized Smarr formula for the stationary axially symmetric black holes with nonlinear electromagnetic fields. The additional te…
On symmetry inheritance of nonminimally coupled scalar fields
Irena Barjašić, Ivica Smolić
We present the first symmetry inheritance analysis of fields nonminimally coupled to gravity. In this work we are focused on the real scalar field with nonminimal coupling of t…
On the various aspects of electromagnetic potentials in spacetimes with symmetries
Ivica Smolić
We revise and generalize the properties of the electric and the magnetic scalar potentials in spacetimes admitting a Killing vector field: Their constancy on the Killing horizons,…
Killing Horizons as Equipotential Hypersurfaces
Ivica Smolić
In this note we present a new proof that Killing horizons are equipotential hypersurfaces for the electric and the magnetic scalar potential, that makes no use of gravitational fie…
A new look at hidden conformal symmetries of black holes
Edgardo Franzin, Ivica Smolić
We propose a different approach to the analysis of symmetries in the near-horizon region of black holes. The idea is presented here for spherically symmetric black holes, for which…