20 citations · 56 across the 9 of their papers we have counts for
9 papers
Dark energy genesis: modeling dissipative effects in primordial cosmology
Pietro Pellecchia, Alejandro Perez, Salvatore Ribisi
In various approaches to quantum gravity, spacetime geometry is understood to emerge from more fundamental discrete structures at the Planck scale. As sometimes posited, their pres…
Weyl-transverse gravity with boundaries
Gloria Odak, Salvatore Ribisi
We develop the covariant phase space formulation of Weyl-transverse gravity (WTG) in the presence of general timelike and spacelike boundaries. WTG is classically equivalent to Gen…
Phase spaces and symmetries of Vaidya superspace
Salvatore Ribisi, Francesco Sartini
We investigate the classical symmetries of the dynamics of the null-dust spherically symmetric Vaidya spacetime. Einstein's equations for this model can be obtained as equations of…
Light-cone thermodynamics: purification of the Minkowski vacuum
Alejandro Perez, Salvatore Ribisi
We explicitly express the Minkowski vacuum of a massless scalar field in terms of the particle notion associated with suitable spherical conformal killing fields. These fields are…
Modelling quantum particles falling into a black hole: the deep interior limit
Alejandro Perez, Salvatore Ribisi, Sami Viollet
In this paper we construct a solvable toy model of the quantum dynamics of the interior of a spherical black hole with falling spherical scalar field excitations. We first argue ab…
The landscape of polymer quantum cosmology
Lautaro Amadei, Alejandro Perez, Salvatore Ribisi
We show that the quantization ambiguities of loop quantum cosmology, when considered in wider generality, can be used to produce discretionary dynamical behavior. There is an infin…
Energy-mass equivalence from Maxwell equations
Alejandro Perez, Salvatore Ribisi
Since the appearance of Einstein's paper {\em"On the Electrodynamics of Moving Bodies"} and the birth of special relativity, it is understood that the theory was basically coded wi…
Entanglement distance for arbitrary -qudit hybrid systems
Denise Cocchiarella, Stefano Scali, Salvatore Ribisi +3
The achievement of quantum supremacy boosted the need for a robust medium of quantum information. In this task, higher-dimensional qudits show remarkable noise tolerance and enhanc…
Entanglement distance for an arbitrary state of M qubits
Denise Cocchiarella, Stefano Scali, Salvatore Ribisi +3
We propose a measure of entanglement that can be computed for any pure state of an -qubit system. The entanglement measure has the form of a distance that we derive from an adap…