67 citations · 309 across the 19 of their papers we have counts for
20 papers
Probing Kerr spacetime via interferometric signatures of higher-order images
Fabiano Feleppa, Fabio Aratore, Valerio Bozza +1
Higher-order images produced by photons that orbit close to the unstable photon region of a black hole encode information about the spacetime geometry and leave characteristic sign…
Gravitational lensing by extremal rotating black holes in the strong deflection limit
Fabiano Feleppa, Valerio Bozza, Welmoed Marit de Graaf
In the strong deflection regime, light rays passing close to an astrophysical black hole may remain trapped near unstable photon orbits for a long time before escaping to infinity.…
Bounds on screened dark energy from near-Earth space-based measurements
Fabiano Feleppa, Welmoed Marit de Graaf, Philippe Brax +1
We test screened dark energy with near-Earth, space-based measurements. In a post-Newtonian framework, we compute leading corrections to geodetic precession (Gravity Probe B), LAGE…
Charge constraint on M87* with twisted light
Fabiano Feleppa, Fabrizio Tamburini, Gaetano Lambiase
We propose a novel method to constrain the electric charge of the supermassive black hole M87* by analyzing the orbital angular momentum content of the light it emits. By leveragin…
Imprints of screened dark energy on nonlocal quantum correlations
Fabiano Feleppa, Gaetano Lambiase, Sunny Vagnozzi
We investigate how screening mechanisms, reconciling light scalar fields driving cosmic acceleration with local fifth force constraints, can be probed via their impact on non-local…
Interferometric signature of higher-order images in a parametrized framework
Fabiano Feleppa, Fabio Aratore, Valerio Bozza
This paper investigates gravitational lensing in the strong deflection limit, focusing particularly on higher-order images produced near compact objects such as black holes and the…
Strong deflection of massive particles in spherically symmetric spacetimes
Fabiano Feleppa, Valerio Bozza, Oleg Yu. Tsupko
Near a gravitating compact object, massive particles traveling along timelike geodesics are gravitationally deflected similarly to light. In this paper, we study the deflection ang…
Strong deflection limit analysis of black hole lensing in inhomogeneous plasma
Fabiano Feleppa, Valerio Bozza, Oleg Yu. Tsupko
This paper investigates gravitational lensing effects in the presence of plasma in the strong deflection limit, which corresponds to light rays circling around a compact object and…
Charged particle scattering near the horizon
Fabiano Feleppa, Nava Gaddam, Nico Groenenboom
We study Maxwell theory, in the presence of charged scalar sources, near the black hole horizon in a partial wave basis. We derive the gauge field configuration that solves Maxwell…
Constraining the generalized uncertainty principle with neutron interferometry
Fabiano Feleppa, Hooman Moradpour, Christian Corda +1
The non-zero minimal length arises in various theories of gravity, leading to the so-called generalized uncertainty principle (GUP). In this short paper we analyze the GUP effects…
Twisted light, a new tool for General Relativity and beyond
Fabrizio Tamburini, Fabiano Feleppa, Bo Thidé
We describe and present the first observational evidence that light propagating near a rotating black hole is twisted in phase and carries orbital angular momentum. The novel use o…
Kerr spacetime geometric optics for vortex beams
Fabrizio Tamburini, Fabiano Feleppa, Ignazio Licata +1
We apply the analogy between gravitational fields and optical media in the general relativistic geometric optics framework to describe how light can acquire orbital angular momentu…
Constraining the Generalized Uncertainty Principle with the light twisted by rotating black holes and M87*
Fabrizio Tamburini, Fabiano Feleppa, Bo Thidé
We test the validity of the Generalized Heisenberg's Uncertainty principle in the presence of strong gravitational fields nearby rotating black holes; Heisenberg's principle is sup…
Generalized potential for apparent forces: the Coriolis effect
Elmo Benedetto, Ivana Bochicchio, Christian Corda +2
It is well known, from Newtonian physics, that apparent forces appear when the motion of masses is described by using a non-inertial frame of reference. The generalized potential o…
On the quantization of the extremal Reissner-Nordstrom black hole
C. Corda, F. Feleppa, F. Tamburini
Following Rosen's quantization rules, two of the Authors (CC and FF) recently described the Schwarzschild black hole (BH) formed after the gravitational collapse of a pressureless…
The quantum black hole as a gravitational hydrogen atom
Christian Corda, Fabiano Feleppa
Nathan Rosen's quantization approach to the gravitational collapse is applied in the simple case of a pressureless "star of dust" by finding the gravitational potential, the Schrod…
Hartle-Hawking boundary conditions as Nucleation by de Sitter Vacuum
F. Feleppa, I. Licata, C. Corda
It is shown that, for a de Sitter Universe, the Hartle-Hawking (HH) wave function can be obtained in a simple way starting from the Friedmann-Lemaitre-Robertson-Walker (FLRW) line…
The generalized and extended uncertainty principles and their implications on the Jeans mass
H. Moradpour, A. H. Ziaie, S. Ghaffari +1
The generalized and extended uncertainty principles affect the Newtonian gravity and also the geometry of the thermodynamic phase space. Under the influence of the latter, the ener…
On the general relativistic framework of the Sagnac effect
Elmo Benedetto, Fabiano Feleppa, Ignazio Licata +2
The Sagnac effect is usually considered as being a relativistic effect produced in an interferometer when the device is rotating. General relativistic explanations are known and al…
Black hole thermodynamics in the Sharma-Mittal generalized entropy formalism
S. Ghaffari, H. Moradpour, A. H. Ziaie +3
Using the Sharma-Mittal entropy, we study some properties of the Schwarzschild and Schwarzschild-de Sitter black holes. The results are compared with those obtained by attributing…