Istituto Nazionale di Fisica Nucleare, Sezione di Napoli

output

19922026

researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

collaborating institutions

Showing 2022 · gr-qcShow all

55 papers · 2 filters

gr-qc2022★ 8 cited

The effective Equation of State in Palatini $f (R)$ cosmology

S. Camera, S. Capozziello, L. Fatibene +1

We investigate how the cosmological Equation of State can be used for scrutinizing extended theories of gravity, in particular, the Palatini $f (R)$ gravity. Specifically, the appro…

gr-qc2022★ 19 cited

Testing Horndeski gravity with S2 star orbit

Riccardo Della Monica, Ivan de Martino, Daniele Vernieri +1

We have explored a completely new and alternative way to restrict the parameter space of Horndeski theory of gravity. Using its Newtonian limit, it is possible to test the theory a…

gr-qc2022★ 52 cited

Non-Local Gravity Wormholes

Salvatore Capozziello, Nisha Godani

We consider Non-local Gravity in view to obtain stable and traversable wormhole solutions. In particular, the class of Non-local Integral Kernel Theories of Gravity, with the inver…

gr-qc2022★ 31 cited

Are nonsingular black holes with super-Planckian hair ruled out by S2 star data?

M. Cadoni, M. De Laurentis, I. De Martino +3

We propose a novel nonsingular black-hole spacetime representing a strong deformation of the Schwarzschild solution with mass $M$ by an additional hair $ℓ$ , which may be hierarc…

gr-qc2022★ 4 cited

Impact of trans-Planckian quantum noise on the Primordial Gravitational Wave spectrum

Mattia Cielo, Gianpiero Mangano, Ofelia Pisanti

We investigate the impact of stochastic quantum noise due to trans--Planckian effects on the primordial power spectrum for gravity waves during inflation. Given an energy scale Lam…

gr-qc2022★ 40 cited

Early and late time cosmology: the $f (R)$ gravity perspective

Francesco Bajardi, Rocco D'Agostino, Micol Benetti +2

Discrepancies between observations at early and late cosmic epochs, and the vacuum energy problem associated with the interpretation of cosmological constant, are questioning the $…

gr-qc2022★ 1 cited

Quantum Euler angles and agency-dependent spacetime

Giovanni Amelino-Camelia, Vittorio D'Esposito, Giuseppe Fabiano +3

Quantum gravity is expected to introduce quantum aspects into the description of reference frames. Here we set the stage for exploring how quantum gravity induced deformations of c…

gr-qc2022★ 8 cited

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…

gr-qc2022★ 52 cited

Cosmic evolution and thermal stability of Barrow holographic dark energy in nonflat Friedmann-Robertson-Walker Universe

Giuseppe Gaetano Luciano

We study the cosmological evolution of a nonflat Friedmann-Robertson-Walker Universe filled by pressureless dark matter and Barrow Holographic Dark Energy (BHDE). The latter is a d…

gr-qc2022★ 60 cited

Virgo Detector Characterization and Data Quality: results from the O3 run

F. Acernese, M. Agathos, A. Ain +491

The Advanced Virgo detector has contributed with its data to the rapid growth of the number of detected gravitational-wave (GW) signals in the past few years, alongside the two Adv…

gr-qc2022★ 60 cited

Forecasting constraints on deviations from general relativity in $f (Q)$ gravity with standard sirens

Rocco D'Agostino, Rafael C. Nunes

In this work, we explore how modified gravity theories based on the non-metricity scalar, known as $f (Q)$ gravity, affect the propagation of gravitational waves from inspiraling of…

gr-qc2022★ 20 cited

Black hole thermodynamics from logotropic fluids

Salvatore Capozziello, Rocco D'Agostino, Alessio Lapponi +1

We show that the Einstein field equations with a negative cosmological constant can admit black hole solutions whose thermodynamics coincides with that of logotropic fluids, recent…

gr-qc2022★ 23 cited

Could quantum gravity slow down neutrinos?

Giovanni Amelino-Camelia, Maria Grazia Di Luca, Giulia Gubitosi +2

In addition to its implications for astrophysics, the hunt for GRB neutrinos could also be significant in quantum-gravity research, since they are excellent probes of the microscop…

gr-qc2022★ 7 cited

GINGER

Carlo Altucci, Francesco Bajardi Emilio Barchiesi, Andrea Basti +29

In this paper, we outline the scientific objectives, the experimental layout, and the collaborations envisaged for the GINGER (Gyroscopes IN GEneral Relativity) project. The GINGER…

gr-qc2022★ 3 cited

Discontinuous normals in non-Euclidean geometries and two-dimensional gravity

Emmanuele Battista, Giampiero Esposito

This paper builds two detailed examples of generalized normal in non-Euclidean spaces, i.e. the hyperbolic and elliptic geometries. In the hyperbolic plane we define a n-sided hype…

gr-qc2022★ 91 cited

Slow-roll inflation in $f (Q)$ non-metric gravity

Salvatore Capozziello, Mehdi Shokri

We discuss the cosmological inflation in the context of $f (Q)$ non-metric gravity, where $Q$ is the non-metric scalar. After introducing conformal transformations for $f (Q)$ gravit…

gr-qc2022★ 20 cited

Fluid nature constrains Horndeski gravity

Marcello Miranda, Daniele Vernieri, Salvatore Capozziello +1

The elusive physical nature of Horndeski gravity is elucidated in a new approach depicting this class of theories as a dissipative effective fluid. Requiring the constitutive equat…

gr-qc2022★ 44 cited

Barrow holographic dark energy in the Brans-Dicke cosmology

S. Ghaffari, G. G. Luciano, S. Capozziello

We construct a holographic model for dark energy in the Brans-Dicke cosmology by using the holographic principle considering the Barrow entropy instead of the standard Bekenstein-H…

gr-qc2022★ 13 cited

The amplification of cosmological magnetic fields in Extended $f (T, B)$ Teleparallel Gravity

S. Capozziello, A. Carleo, G. Lambiase

Observations indicate that intergalactic magnetic fields have amplitudes of the order of $\sim 1 0^{- 6}$ G and are uniform on scales of $\sim 10$ kpc. Despite their wide presence in…

gr-qc2022★ 34 cited

First post-Newtonian $N$ -body problem in Einstein-Cartan theory with the Weyssenhoff fluid: equations of motion

Emmanuele Battista, Vittorio De Falco

We derive the equations of motion for an $N$ -body system in the Einstein-Cartan gravity theory at the first post-Newtonian order by exploiting the Weyssenhoff fluid as the spin mod…

gr-qc2022★ 10 cited

Energy-Momentum Complex in Higher Order Curvature-Based Local Gravity

Salvatore Capozziello, Maurizio Capriolo, Gaetano Lambiase

In General Relativity, there have been many proposals for defining the gravitational energy density, notably those proposed by Einstein, Tolman, Landau and Lifshitz, Papapetrou, Mø…

gr-qc2022★ 155 cited

Comparing Equivalent Gravities: common features and differences

Salvatore Capozziello, Vittorio De Falco, Carmen Ferrara

We discuss equivalent representations of gravity in the framework of metric-affine geometries pointing out basic concepts from where these theories stem out. In particular, we take…

gr-qc2022★ 37 cited

Late-time constraints on modified Gauss-Bonnet cosmology

Francesco Bajardi, Rocco D'Agostino

In this paper, we consider a gravitational action containing a combination of the Ricci scalar, $R$ , and the topological Gauss--Bonnet term, $G$ . Specifically, we study the cosmolo…