188 citations · 1.3k across the 23 of their papers we have counts for
23 papers
Gravitational Collapse in Scale-Dependent Gravity
Ramin Hassannejad, Gaetano Lambiase, Fabio Scardigli +1
In this paper we study an Oppenheimer-Snyder (OS)-like gravitational collapse in the general framework of scale-dependent gravity. We explore the collapse in spherically symmetric…
Probing the Lorentz Symmetry Violation Using the First Image of Sagittarius A*: Constraints on Standard-Model Extension Coefficients
Mohsen Khodadi, Gaetano Lambiase
Thanks to unparalleled near-horizon images of the shadows of Messier 87* (M87*) and Sagittarius A* (Sgr A*) delivered by the Event Horizon Telescope (EHT), two amazing windows open…
Neutrino lines from MeV dark matter annihilation and decay in JUNO
Kensuke Akita, Gaetano Lambiase, Michiru Niibo +1
We discuss the discovery potential of JUNO experiment for neutrino lines from MeV dark matter (DM) annihilation and decay in a model independent way. We find that JUNO will be able…
Planck Stars from a Scale-dependent Gravity theory
Fabio Scardigli, Gaetano Lambiase
Scale dependence of fundamental physical parameters is a generic feature of ordinary quantum field theory. When applied to gravity, this idea produces effective actions generically…
Generalized uncertainty principle and Asymptotic Safe gravity
Gaetano Lambiase, Fabio Scardigli
We present a procedure to link the deformation parameter of the generalized uncertainty principle (GUP) to the two free parameters $\om$ and of the running Newtonian coupli…
Strongly Magnetized Hot QCD Matter and Stochastic Gravitational Wave Background
Mohsen Khodadi, Ujjal Kumar Dey, Gaetano Lambiase
The first-order phase transitions in the early Universe are one of the well-known sources which release the stochastic background of gravitational waves. In this paper, we study th…
Unstable Cosmic Neutrino Capture
Kensuke Akita, Gaetano Lambiase, Masahide Yamaguchi
Future direct observations of the Cosmic Neutrino Background (CB) have the potential to explore a neutrino lifetime, especially in the region of the age of the universe, $t_0=4.…
No-Hair Theorem in the Wake of Event Horizon Telescope
Mohsen Khodadi, Gaetano Lambiase, David F. Mota
Thanks to the release of the extraordinary EHT image of shadow attributed to the M87* supermassive black hole (SMBH), we have a novel window to assess the validity of fundamental p…
Generalized ghost-free propagators in nonlocal field theories
Luca Buoninfante, Gaetano Lambiase, Yuichi Miyashita +2
In this paper we present an iterative method to generate an infinite class of new nonlocal field theories whose propagators are ghost-free. We first examine the scalar field case a…
Generalized Uncertainty Principle in three-dimensional gravity and the BTZ black hole
Alfredo Iorio, Gaetano Lambiase, Pablo Pais +1
We investigate the structure of the gravity-induced Generalized Uncertainty Principle in three dimensions. The subtleties of lower dimensional gravity, and its important difference…
Transmutation of nonlocal scale in infinite derivative field theories
Luca Buoninfante, Anish Ghoshal, Gaetano Lambiase +1
In this paper we will show an ultraviolet -infrared connection for ghost-free infinite derivative field theories where the Lagrangians are made up of exponentials of entire functio…
Nonlocal generalization of Galilean theories and gravity
Luca Buoninfante, Gaetano Lambiase, Masahide Yamaguchi
In this paper we propose a wider class of symmetries including the Galilean shift symmetry as a subclass. We will show how to construct ghost-free nonlocal actions, consisting of i…
Towards nonsingular rotating compact object in ghost-free infinite derivative gravity
Luca Buoninfante, Alan S. Cornell, Gerhard Harmsen +4
The vacuum solution of Einstein's theory of general relativity provides a rotating metric with a ring singularity, which is covered by the inner and outer horizons, and an ergo reg…
Conformally-flat, non-singular static metric in infinite derivative gravity
Luca Buoninfante, Alexey S. Koshelev, Gaetano Lambiase +2
In Einstein's theory of general relativity the vacuum solution yields a blackhole with a curvature singularity, where there exists a point-like source with a Dirac delta distributi…
Ghost-free infinite derivative quantum field theory
Luca Buoninfante, Gaetano Lambiase, Anupam Mazumdar
In this paper we will study Lorentz-invariant, infinite derivative quantum field theories, where infinite derivatives give rise to non-local interactions at the energy scale ,…
Classical properties of non-local, ghost- and singularity-free gravity
Luca Buoninfante, Alexey S. Koshelev, Gaetano Lambiase +1
In this paper we will show all the linearized curvature tensors in the infinite derivative ghost and singularity free theory of gravity in the static limit. We have found that in t…
Rotating metric in Non-Singular Infinite Derivative Theories of Gravity
Alan S. Cornell, Gerhard Harmsen, Gaetano Lambiase +1
In this paper we will provide a non-singular rotating space time metric for a ghost free infinite derivative theory of gravity. We will provide the predictions for the Lense-Thirri…
Lorentz violation and generalized uncertainty principle
Gaetano Lambiase, Fabio Scardigli
Investigations on possible violation of Lorentz invariance have been widely pursued in the last decades, both from theoretical and experimental sides. A comprehensive framework to…
Quantum spreading of a self-gravitating wave-packet in singularity free gravity
Luca Buoninfante, Gaetano Lambiase, Anupam Mazumdar
In this paper we will study for the first time how the wave-packet of a self-gravitating meso-scopic system spreads in theories beyond Einstein's general relativity. In particular,…
Quantum solitonic wave-packet of a meso-scopic system in singularity free gravity
Luca Buoninfante, Gaetano Lambiase, Anupam Mazumdar
In this paper we will discuss how to localise a quantum wave-packet due to self-gravitating meso-scopic object by taking into account gravitational self-interaction in the Schrödin…
GUP parameter from quantum corrections to the Newtonian potential
Fabio Scardigli, Gaetano Lambiase, Elias Vagenas
We propose a technique to compute the deformation parameter of the generalized uncertainty principle by using the leading quantum corrections to the Newtonian potential. We just as…
Cosmology with bulk viscosity and the gravitino problem
L. Buoninfante, G. Lambiase
The gravitino problem is revisited in the framework of cosmological models in which the primordial cosmic matter is described by a relativistic imperfect fluid. Dissipative effects…
Cosmological evolution of thermal relic particles in gravity
S. Capozziello, V. Galluzzi, G. Lambiase +1
By considering gravity models, the cosmic evolution is modified with respect to the standard CDM scenario. In particular, the thermal history of particles results modifie…