Alessio Lapponi
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View article: Gravitational redshift via quantized linear gravity
Gravitational redshift via quantized linear gravity Open
We employ linearized quantum gravity to show that gravitational redshift occurs as a purely quantum process. To achieve our goal we study the interaction between propagating photonic wave-packets and gravitons. Crucially, the redshift occu…
View article: Preserving quantum information in f(Q) non-metric gravity cosmology
Preserving quantum information in f(Q) non-metric gravity cosmology Open
The effects of cosmological expansion on quantum bosonic states are investigated, using quantum information theory. In particular, a generic Bogoliubov transformation of bosonic field modes is considered and the state change on a single mo…
View article: How cosmological expansion affects communication between distant quantum systems
How cosmological expansion affects communication between distant quantum systems Open
A quantum communication protocol between harmonic oscillator detectors, interacting with a quantum field, is developed in a cosmological expanding background. The aim is to see if the quantum effects arising in an expanding universe, such …
View article: Making two particle detectors in flat spacetime communicate quantumly
Making two particle detectors in flat spacetime communicate quantumly Open
A communication protocol with nonzero quantum capacity is found when the two communicating parts are particle detector models in (3+1)-dimensional spacetime. In particular, as detectors, we consider two harmonic oscillators interacting wit…
View article: Preserving quantum information in $f(Q)$ cosmology
Preserving quantum information in $f(Q)$ cosmology Open
The effects of cosmological expansion on quantum bosonic states are investigated, using quantum information theory. In particular, a generic Bogoliubov transformation of bosonic field modes is considered and the state change on a single mo…
View article: Relativistic quantum communication between harmonic oscillator detectors
Relativistic quantum communication between harmonic oscillator detectors Open
We propose a model of communication employing two harmonic oscillator detectors interacting through a scalar field in a background Minkowski spacetime. In this way, the scalar field plays the role of a quantum channel, namely a bosonic Gau…
View article: Modeling black hole evaporative mass evolution via radiation from moving mirrors
Modeling black hole evaporative mass evolution via radiation from moving mirrors Open
We investigate the evaporation of an uncharged and nonrotating black hole in vacuum by taking into account the effects given by the shrinking of the horizon area. These include the backreaction on the metric and other smaller contributions…
View article: Relativistic quantum communication between harmonic oscillator detectors
Relativistic quantum communication between harmonic oscillator detectors Open
We propose a model of communication employing two harmonic oscillator detectors interacting through a scalar field in a background Minkowski spacetime. In this way, the scalar field plays the role of a quantum channel, namely a Bosonic Gau…
View article: Black hole thermodynamics from logotropic fluids
Black hole thermodynamics from logotropic fluids Open
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, recently investigated to heal some cosmological and astrophysical…
View article: Modeling black hole evaporative mass evolution via radiation from moving mirrors
Modeling black hole evaporative mass evolution via radiation from moving mirrors Open
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 include the back-reaction on the metric and other smaller contr…
View article: Black hole thermodynamics from logotropic fluids
Black hole thermodynamics from logotropic fluids Open
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, recently investigated to heal some cosmological and astrophysical…
View article: Quantum communication through a partially reflecting accelerating mirror
Quantum communication through a partially reflecting accelerating mirror Open
Motivated by the fact that the null-shell of a collapsing black hole can be described by a perfectly reflecting accelerating mirror, we investigate an extension of this model to mirror semi-transparency and derive a general implicit expres…