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 2020 · gr-qcShow all

34 papers · 2 filters

gr-qc2020★ 12 cited

Quantum nonlocality in extended theories of gravity

Victor A. S. V. Bittencourt, Massimo Blasone, Fabrizio Illuminati +3

We investigate how pure-state Einstein-Podolsky-Rosen correlations in the internal degrees of freedom of massive particles are affected by a curved spacetime background described b…

gr-qc2020★ 4 cited

A proposal for Heisenberg uncertainty principle and STUR for curved backgrounds: an application to white dwarf, neutron stars and black holes

Stefano Viaggiu

After a critical overview of the Generalized Uncertainty Principle (GUP) applied to compact objects, we propose a texture of Heisenberg uncertainty principle in curved spacetimes (…

gr-qc2020★ 20 cited

Phenomenology of curvature-induced quantum-gravity effects

Giovanni Amelino-Camelia, Giacomo Rosati, Suzana Bedić

Several studies have been devoted to the possibility that quantum gravity might tangibly affect relativistic kinematics for particles propagating from distant astrophysical sources…

gr-qc2020★ 5 cited

Multi-particle systems in quantum spacetime and a novel challenge for center-of-mass motion

Giovanni Amelino-Camelia, Valerio Astuti, Michelangelo Palmisano +1

In recent times there has been considerable interest in scenarios for quantum gravity in which particle kinematics is affected nonlinearly by the Planck scale, with encouraging res…

gr-qc2020★ 26 cited

Non-Local Curvature and Gauss-Bonnet Cosmologies by Noether Symmetries

Francesco Bajardi, Salvatore Capozziello, Daniele Vernieri

Non-local gravity cosmologies are considered under the standard of Noether Symmetry Approach. In particular, we focus on non-local theories whose gravitational actions depend on cu…

gr-qc2020★ 71 cited

All-sky search in early O3 LIGO data for continuous gravitational-wave signals from unknown neutron stars in binary systems

The LIGO Scientific Collaboration, the Virgo Collaboration, R. Abbott +1369

Rapidly spinning neutron stars are promising sources of persistent, continuous gravitational waves. Detecting such a signal would allow probing of the physical properties of matter…

gr-qc2020★ 9 cited

Quasi-local Casimir energy and vacuum buoyancy in a weak gravitational field

Francesco Sorge

Casimir energy in presence of a weak gravitational field is discussed taking into account the issues related to energy and its conservation in a curved background. It is well-known…

gr-qc2020★ 65 cited

Einstein, Planck and Vera Rubin: relevant encounters between the Cosmological and the Quantum Worlds

Paolo Salucci, Giampiero Esposito, Gaetano Lambiase +38

In Cosmology and in Fundamental Physics there is a crucial question like: where the elusive substance that we call Dark Matter is hidden in the Universe and what is it made of?, th…

gr-qc2020★ 3 cited

The generally covariant meaning of space distances

Salvatore Capozziello, Alice Chiappini, Lorenzo Fatibene +1

We propose a covariant and geometric framework to introduce space distances as they are used by astronomers. In particular, we extend the definition of space distances from the one…

gr-qc2020★ 204 cited

Bouncing Cosmology in f(Q) Symmetric Teleparallel Gravity

Francesco Bajardi, Daniele Vernieri, Salvatore Capozziello

We consider f(Q) extended symmetric teleparallel cosmologies, where Q is the non-metricity scalar, and constrain its functional form through the order reduction method. By using th…

gr-qc2020★ 5 cited

What is a reduced boundary in general relativity?

Emmanuele Battista, Giampiero Esposito

The concept of boundary plays an important role in several branches of general relativity, e.g., the variational principle for the Einstein equations, the event horizon and the app…

gr-qc2020★ 106 cited

Quantum gravitational decoherence from fluctuating minimal length and deformation parameter at the Planck scale

Luciano Petruzziello, Fabrizio Illuminati

Schemes of gravitationally induced decoherence are being actively investigated as possible mechanisms for the quantum-to-classical transition. Here, we introduce a decoherence proc…

gr-qc2020★ 98 cited

Lunar Gravitational-Wave Antenna

Jan Harms, Filippo Ambrosino, Lorella Angelini +51

Monitoring of vibrational eigenmodes of an elastic body excited by gravitational waves was one of the first concepts proposed for the detection of gravitational waves. At laborator…

gr-qc2020★ 31 cited

Equivalence of non-minimally coupled cosmologies by Noether symmetries

Francesco Bajardi, Salvatore Capozziello

We discuss non-minimally coupled cosmologies involving different geometric invariants. Specifically, actions containing a non-minimally coupled scalar field to gravity described, i…

gr-qc2020★ 89 cited

Stable and self-consistent compact star models in teleparallel gravity

Gamal G. L. Nashed, Salvatore Capozziello

In the framework of Teleparallel Gravity, we derive a charged non-vacuum solution for a physically symmetric tetrad field with two unknown functions of radial coordinate. The field…

gr-qc2020★ 347 cited

Gravitational Test Beyond the First Post-Newtonian Order with the Shadow of the M87 Black Hole

Dimitrios Psaltis, Lia Medeiros, Pierre Christian +185

The 2017 Event Horizon Telescope (EHT) observations of the central source in M87 have led to the first measurement of the size of a black-hole shadow. This observation offers a new…

gr-qc2020★ 807 cited

Tests of General Relativity with Binary Black Holes from the second LIGO-Virgo Gravitational-Wave Transient Catalog

The LIGO Scientific Collaboration, the Virgo Collaboration, R. Abbott +1344

Gravitational waves enable tests of general relativity in the highly dynamical and strong-field regime. Using events detected by LIGO-Virgo up to 1 October 2019, we evaluate the co…

gr-qc2020★ 27 cited

Gravitational Waves in Higher Order Teleparallel Gravity

Salvatore Capozziello, Maurizio Capriolo, Loredana Caso

The teleparallel equivalent of higher order Lagrangians like $L_{□ R} = - R + a_{0} R^{2} + a_{1} R □ R$ can be obtained by means of the boundary term $B = 2 \nabla_{μ} T^{μ}$ . In this perspec…

gr-qc2020★ 40 cited

Considerations on gravitational waves in higher-order local and non-local gravity

Salvatore Capozziello, Maurizio Capriolo, Shin'ichi Nojiri

The detection of gravitational wave modes and polarizations could constitute an extremely important signature to discriminate among different theories of gravity. According to this…

gr-qc2020★ 1.3k cited

GW190521: A Binary Black Hole Merger with a Total Mass of $150 M_{⊙}$

The LIGO Scientific Collaboration, the Virgo Collaboration, R. Abbott +1253

On May 21, 2019 at 03:02:29 UTC Advanced LIGO and Advanced Virgo observed a short duration gravitational-wave signal, GW190521, with a three-detector network signal-to-noise ratio…

gr-qc2020★ 14 cited

Emergent classical universes from initial quantum states in a tomographical description

Cosimo Stornaiolo

Quantum and classical physical states are represented in a unified way when they are described by symplectic tomography. Therefore this representation allows us to study directly t…

gr-qc2020★ 187 cited

Extended Gravity Description for the GW190814 Supermassive Neutron Star

Artyom V. Astashenok, Salvatore Capozziello, Sergei D. Odintsov +1

Very recently a compact object with a mass in the range $2.50 \div 2.67 M_{⊙}$ has been discovered via gravitational waves detection of a compact binary coalescence. The mass of t…