Dr. Luca Smaldone
Institute of Particle and Nuclear Physics, Faculty of Mathematics and Physics, Charles University, Prague, Czech Republic
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Academic Career Length
10Years (2017-Present)
(Calculated once Scilit publication data is synced: current year − year of first publication + 1)
Representative Publications
View All Publications6 January 2020 in Physical Review D
Journal Article
Luca Buoninfante
Giuseppe Gaetano Luciano
Luciano PetruzzielloLuca SmaldoneWe study neutrino oscillations within the framework of extended theories of gravity. Based on the covariant reformulation of Pontecorvo’s formalism, we evaluate the oscillation probability of neutrinos propagating in static spacetimes described by gravitational actions quadratic in the curvature invariants. Calculations are carried out in the two-flavor approximation, for oscillations both in vacuum and matter. It is shown that the neutrino phase is sensitive to the violation of the strong equivalence principle. By way of illustration, we specialize our analysis to various extended models of gravity in order both to quantify such a violation and to understand how the characteristic free parameters of these models affect the neutrino phase. The possibility to fix new bounds on these parameters and to constrain extended theories of gravity is finally discussed.
24 January 2019 in Physical Review D
Journal Article
In the context of quantum field theory, we derive flavor-energy uncertainty relations for neutrino oscillations. By identifying the nonconserved flavor charges with the “clock observables,” we arrive at the Mandelstam-Tamm version of time-energy uncertainty relations. In the ultrarelativistic limit, these relations yield the well-known condition for neutrino oscillations. Ensuing nonrelativistic corrections to the latter are explicitly evaluated. The analogy among flavor states and unstable particles and a novel interpretation of our uncertainty relations, based on the unitary inequivalence of Fock spaces for flavor and massive neutrinos, are also discussed.
Journal Article
GAGiovanni Acquaviva
Giovanni Acquaviva
Alfredo IorioPPPablo Pais
Pablo PaisLuca SmaldoneAnalogs of fundamental physical phenomena can be used in two ways. One way consists in reproducing specific aspects of the classical or quantum gravity of quantum fields in curved space or of other high-energy scenarios on lower-energy corresponding systems. The “reverse way” consists in building fundamental physical theories, for instance, quantum gravity models, inspired by the lower-energy corresponding systems. Here, we present the case of graphene and other Dirac materials.
5 October 2018 in Physics Letters B
Journal Article
Massimo BlasoneGiuseppe Gaetano LucianoLuciano PetruzzielloLuca SmaldoneWe analyze the Casimir effect for a flavor doublet of mixed scalar fields confined inside a one-dimensional finite region. In the framework of the unitary inequivalence between mass and flavor representations in quantum field theory, we employ two alternative approaches to derive the Casimir force: in the first case, the zero-point energy is evaluated for the vacuum of fields with definite mass, then similar calculations are performed for the vacuum of fields with definite flavor. We find that signatures of mixing only appear in the latter context, showing the result to be independent of the mixing parameters in the former.
2 November 2020 in Physical Review D
Journal Article
Assuming that the degrees of freedom of a black hole are finite in number and of fermionic nature, we naturally obtain, within a second-quantized toy model of the evaporation, that the Bekenstein bound is a consequence of the Pauli exclusion principle for these fundamental degrees of freedom. We show that entanglement, Bekenstein, and thermodynamic entropies of the black hole all stem from the same approach, based on the entropy operator whose structure is the one typical of Takahashi and Umezawa’s thermofield dynamics. We then evaluate the von Neumann black hole-environment entropy and noticeably obtain a Page-like evolution. We finally show that this is a consequence of a duality between our model and a quantum dissipativelike fermionic system.
14 September 2023 in Physical Review A
Journal Article
Massimo Blasone
Fabrizio IlluminatiLuciano PetruzzielloLuca SmaldoneWe investigate Leggett-Garg inequalities for neutrino oscillations in the quantum field theoretical setting. We derive an exact flavor-mass uncertainty relation and prove that this uncertainty product yields an upper bound to the violation of the inequalities. The relation between temporal nonclassicality and quantum uncertainty realizes the Lüders upper bound to the violation of the Leggett-Garg inequalities in quantum field theory, analogous to the Tsirelson upper bound to the violation of the Bell inequalities. By studying the problem both in the exact field-theoretical setting and in the limiting quantum mechanical approximation, we show that on average the inequalities are violated more often and more strongly in quantum field theory than in quantum mechanics.
About Me
Luca Smaldone graduated with an (M.Sc.) from the University of Salerno (Italy). In 2018, he was awarded his Ph.D (Doctor Europaeus) by the University of Campania ‘’L. Vanvitelli” and University of Salerno. In 2019, he won a prestigious post-doctoral fellowship to attend the Charles University in Prague to carry out a project on Quantum Gravity and Analogs from 2020 to 2021. He won a position as Assistant Professor for the project exploring the early universe with gravitational waves, at the Institute of Theoretical Physics of the University of Warsaw from 2022 to 2023. He is currently employed as a Post-Doc in the Statistical Mechanics group of the University of Salerno. His research interests are mainly devoted to quantum field theory and quantum gravity. In particular, he is interested in neutrino mixing and oscillations in quantum field theory and the problem of dynamic generation of neutrino masses and mixing. Moreover, he has studied canonical transformations in functional integral formalism, exploiting how violations of the Stone–von Neumann theorem can be viewed in that context. In quantum gravity, he helped to develop the so-called Xons model, where classical space geometry and quantum matter emerge from underlying fermion dynamics. He has also studied topological defects in quantum field theories with spontaneous symmetry breaking and quantum groups, e.g., twisted fermion algebras and q-deformed Heisenberg algebra in connection with polymer quantization.