45 citations · 205 across the 15 of their papers we have counts for
17 papers
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…
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…
Production of ultralight dark matter from inflationary spectator fields
Alessio Belfiglio, Orlando Luongo
We investigate inflationary particle production associated with a spectator ultralight scalar field, which has been recently proposed as a plausible dark matter candidate. In this…
Superhorizon entanglement from inflationary particle production
Alessio Belfiglio, Orlando Luongo, Stefano Mancini
We investigate entanglement generation between the sub- and super-Hubble modes of inflaton fluctuations, in the context of particle production from perturbations during inflation.…
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…
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…
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…
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…