Gaetano Lambiase

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The European Physical Journal C

Apr 2, 2024 | epjc.epj.org | Arindam Das |Gaetano Lambiase |Sezione di Napoli |Takaaki Nomura

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made.
Astrophysical neutrino oscillations after pulsar timing array analyses

Dec 18, 2023 | link.aps.org | Gaetano Lambiase |Luca Visinelli |Shanghai Jiao Tong |Leonardo Mastrototaro

The pattern of neutrino flavor oscillations could be altered by the influence of noisy perturbations such as those arising from a gravitational wave background (GWB).
Constraints on Tsallis Cosmology from Big Bang Nucleosynthesis and the Relic Abundance of Cold Dark Matter Particles

Oct 29, 2023 | mdpi.com | Petr Jizba |Gaetano Lambiase

Share and CiteMDPI and ACS StyleJizba, P.; Lambiase, G. Constraints on Tsallis Cosmology from Big Bang Nucleosynthesis and the Relic Abundance of Cold Dark Matter Particles. Entropy 2023, 25, 1495. https://doi.org/10.3390/e25111495AMA StyleJizba P, Lambiase G. Constraints on Tsallis Cosmology from Big Bang Nucleosynthesis and the Relic Abundance of Cold Dark Matter Particles. Entropy. 2023; 25(11):1495. https://doi.org/10.3390/e25111495Chicago/Turabian StyleJizba, Petr, and Gaetano Lambiase. 2023.
Coherent states for generalized uncertainty relations as Tsallis probability amplitudes: New route to nonextensive thermostatistics

Sep 12, 2023 | link.aps.org | Petr Jizba |Czech Technical |Freie Universität Berlin |Gaetano Lambiase

We study coherent states associated with a generalized uncertainty principle (GUP). We separately analyze the cases of positive and negative deformation parameter β, showing that the ensuing probability distribution is a Tsallis distribution whose nonextensivity parameter q is monotonically related to β.
General formalism of the quantum equivalence principle - Communications Physics

Aug 1, 2023 | nature.com | Gaetano Lambiase |Mitja Fridman

AbstractA consistent theory of quantum gravity will require a fully quantum formulation of the classical equivalence principle. Such a formulation has been recently proposed in terms of the equality of the rest, inertial and gravitational mass operators, and for non-relativistic particles in a weak gravitational field.
Planck stars from a scale-dependent gravity theory

May 1, 2023 | link.aps.org | Fabio Scardigli |Dipartimento di Matematica |Politecnico di Milano |Gaetano Lambiase

Abstract 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 containing a running Newtonian coupling constant, from which new (spherically symmetric) black hole spacetimes can be inferred. As a minimum useful requirement, of course, the new metrics should match with a Schwarzschild field at a large radial coordinate.