Zobrazeno 1 - 10
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pro vyhledávání: '"Smolić, Ivica"'
Autor:
Smolić, Ivica
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 magnetised samples of lunar regolith, based on identical vanishing of external magnetic field of
Externí odkaz:
http://arxiv.org/abs/2410.01890
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 the Schwarzschild black hole in quantized spacetime. Special attentio
Externí odkaz:
http://arxiv.org/abs/2410.00088
We study gravitational perturbations of the Schwarzschild metric in the context of noncommutative gravity. $r-\varphi$ and $r-t$ noncommutativity are introduced through a Moyal twist of the Hopf algebra of diffeomorphisms. Differential geometric stru
Externí odkaz:
http://arxiv.org/abs/2409.01402
Within the framework of noncommutative (NC) deformation of gauge field theory by twist, we first rederive the NC scalar and gauge field model from our previous papers and then generalize it to the second order in the Seiberg-Witten (SW) map. It turns
Externí odkaz:
http://arxiv.org/abs/2404.03755
Publikováno v:
Class. Quantum Grav. 41 (2024) 157002
In classical Maxwell's electromagnetism, monopole term of the electric field is proportional to $r^{-2}$, while higher order multipole terms, sourced by anisotropic sources, fall-off faster. However, in nonlinear electromagnetism even a spherically s
Externí odkaz:
http://arxiv.org/abs/2403.08909
Publikováno v:
Phys. Lett. B 854 (2024) 138750
Nonlinear extensions of classical Maxwell's electromagnetism are among the prominent candidates for theories admitting regular black hole solutions. A quest for such examples has been fruitful, but mostly unsystematic and littered by the introduction
Externí odkaz:
http://arxiv.org/abs/2311.17151
Publikováno v:
European Journal of Physics 44 (2023) 065203
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 confusions related to it, to be mindful of in teaching the subject. Thes
Externí odkaz:
http://arxiv.org/abs/2310.19312
Publikováno v:
J. High Energ. Phys. 2024, 130 (2024)
We use the framework of Hopf algebra and noncommutative differential geometry to build a noncommutative (NC) theory of gravity in a bottom-up approach. Noncommutativity is introduced via deformed Hopf algebra of diffeomorphisms by means of a Drinfeld
Externí odkaz:
http://arxiv.org/abs/2310.06038
Publikováno v:
Phys.Lett.B 854 (2024) 138716
A quest for phenomenological footprints of quantum gravity is among the central scientific tasks in the rising era of gravitational wave astronomy. We study gravitational wave dynamics within the noncommutative geometry framework, based on a Drinfeld
Externí odkaz:
http://arxiv.org/abs/2310.06018
Autor:
Bokulić, Ana, Smolić, Ivica
Publikováno v:
Class. Quantum Grav. 40 (2023) 165010
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 built into the corpus of black hole uniqueness theorems. We revisit the
Externí odkaz:
http://arxiv.org/abs/2303.00764