45 citations · 233 across the 22 of their papers we have counts for
22 papers · 1 filter
Causal structure and optical signatures of rotating power law Kalb-Ramond geometry
Hassan Hassanabadi, Orlando Luongo
We investigate a stationary and axisymmetric power law Kalb-Ramond geometry, obtained as a rotating extension of the asymptotically flat static solution. We reconstruct the exact i…
Cosmological horizon thermodynamics in Gauss-Bonnet quasi-dilaton Massive Gravity
Sobhan Kazempour, Orlando Luongo, Sabahat +2
We investigate the thermodynamic properties of the cosmological apparent horizon in Gauss-Bonnet quasi-dilaton massive gravity. We derive the modified Friedmann equations and refor…
Optical and thermodynamic properties of Kerr-Bertotti-Robinson black holes
Hassan Hassanabadi, Michael R. R. Good, Soroush Zare +2
We investigate the thermodynamic and optical properties of Kerr--Bertotti--Robinson black holes, namely rotating black holes immersed in an external Bertotti--Robinson electromagne…
Entanglement generation from gravitationally produced massless vector particles during inflation
Alessio Belfiglio, Mattia Dubbini, Orlando Luongo
We study the gravitational production of spectator massless vector particles in a single-field inflationary scenario, and the related entanglement generation across the Hubble hori…
Multipartite entanglement features of primordial non-gaussianities
Alessio Belfiglio, Roberto Franzosi, Orlando Luongo
We discuss some entanglement features associated with cubic non-Gaussian perturbations in single-field inflationary scenarios. We adopt standard momentum-space techniques to show h…
Geometric multipartite entanglement from gravitational particle production
Alessio Belfiglio, Roberto Franzosi, Orlando Luongo
We explore novel generation of genuine multipartite entanglement within gravitational particle production processes during inflationary stages. To this end, we focus on perturbativ…
Quantum entanglement in cosmology
Alessio Belfiglio, Orlando Luongo, Stefano Mancini
We discuss recent progress in the study of entanglement within cosmological frameworks, focusing on both momentum and position-space approaches and also reviewing the possibility t…
Gravitational dark matter production from fermionic spectator fields during inflation
Alessio Belfiglio, Orlando Luongo
We investigate the gravitational particle production from vacuum for a minimally coupled fermionic spectator field during a single-field inflationary phase. We observe that metric…
Entanglement entropy evolution during gravitational collapse
Alessio Belfiglio, Orlando Luongo, Stefano Mancini +1
We investigate the dynamics of the ground state entanglement entropy for a discretized scalar field propagating within the Oppenheimer-Snyder collapse metric. Starting from a well-…
Comparing geometric and gravitational particle production in Jordan and Einstein frames
Alessio Belfiglio, Orlando Luongo, Tommaso Mengoni
We explore cosmological particle production associated with inflationary fluctuations by comparing gravitational and geometric mechanisms, within a non-minimal Yukawa-like coupling…
How cosmological expansion affects communication between distant quantum systems
Alessio Lapponi, Orlando Luongo, Stefano Mancini
A quantum communication protocol between harmonic oscillator detectors, interacting with a quantum field, is developed in a cosmological expanding background. The aim is to see if…
Horizon entanglement area law from regular black hole thermodynamics
Alessio Belfiglio, S. Mahesh Chandran, Orlando Luongo +1
We investigate the thermodynamics of regular black hole configurations via quantum analogs of entropy and energy -- namely, the entanglement entropy and entanglement energy -- near…
Entanglement entropy in quantum black holes
Alessio Belfiglio, Orlando Luongo, Stefano Mancini +1
We discuss the entanglement entropy for a massive Klein-Gordon field in two Schwarzschild-like quantum black hole spacetimes, also including a nonminimal coupling term with the bac…
Particle production from non-minimal coupling in a symmetry breaking potential transporting vacuum energy
Alessio Belfiglio, Youri Carloni, Orlando Luongo
We propose an inflationary scenario where the inflaton field is non-minimally coupled to spacetime curvature and inflation is driven by a vacuum energy symmetry breaking potential…
Entanglement area law violation from field-curvature coupling
Alessio Belfiglio, Orlando Luongo, Stefano Mancini
We investigate the entanglement entropy of a massive scalar field nonminimally coupled to spacetime curvature, assuming a static, spherically symmetric background. We discretize th…
Entanglement entropy for spherically symmetric regular black holes
Orlando Luongo, Stefano Mancini, Paolo Pierosara
The Bardeen and Hayward spacetimes are here considered as standard configurations of spherically symmetric regular black holes. Assuming the thermodynamics of such objects to be an…
Inflationary entanglement
Alessio Belfiglio, Orlando Luongo, Stefano Mancini
We investigate the entanglement due to geometric corrections in particle creation during inflation. To do so, we propose a single-field inflationary scenario, nonminimally coupled…
Modeling black hole evaporative mass evolution via radiation from moving mirrors
Michael R. R. Good, Alessio Lapponi, Orlando Luongo +1
We investigate the evaporation of an uncharged and non-rotating black hole (BH) in vacuum, by taking into account the effects given by the shrinking of the horizon area. These incl…
Alleviating the cosmological constant problem from particle production
Alessio Belfiglio, Roberto Giambò, Orlando Luongo
We explore a toy model mechanism of geometric cancellation, alleviating the (classical) cosmological constant problem. To do so, we assume at primordial times that vacuum energy fu…
Geometric corrections to cosmological entanglement
Alessio Belfiglio, Orlando Luongo, Stefano Mancini
We investigate entanglement production by inhomogeneous perturbations over a homogeneous and isotropic cosmic background, demonstrating that the interplay between quantum and geome…
Quantum communication through a partially reflecting accelerating mirror
Michael R. R. Good, Alessio Lapponi, Orlando Luongo +1
Motivated by the fact that the null-shell of a collapsing black hole can be described by a perfectly reflecting accelerating mirror, we investigate an extension of this model to mi…
Entanglement production in Einstein-Cartan theory
Alessio Belfiglio, Orlando Luongo, Stefano Mancini
We study the entanglement production for Dirac and Klein-Gordon fields in an expanding spacetime characterized by the presence of torsion. Torsion is here considered according to t…