Neutrinos in curved spacetime: Particle mixing and flavor oscillations

Capolupo, Antonio; Lambiase, Gaetano; Quaranta, Aniello

doi:10.1103/physrevd.101.095022

Cited by 54 publications

(47 citation statements)

References 43 publications

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“…Both geometric phases and the oscillation formulae in presence of decoherence provide valuable tools to discriminate between Dirac and Majorana neutrinos. Notice that, the effects revealed by analyzing particle mixing and oscillations in quantum field theory framework and the effects induced by the space-time curvature on neutrino oscillations [111] are negligible. These effects can represent components of dark energy and dark matter of the universe.…”

Section: Discussionmentioning

confidence: 99%

Discerning the Nature of Neutrinos: Decoherence and Geometric Phases

et al. 2020

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We present new approaches to distinguish between Dirac and Majorana neutrinos. The first is based on the analysis of the geometric phases associated to neutrinos in matter, the second on the effects of decoherence on neutrino oscillations. In the former we compute the total and geometric phase for neutrinos, and find that they depend on the Majorana phase and on the parametrization of the mixing matrix. In the latter, we show that Majorana neutrinos might violate CPT symmetry, whereas Dirac neutrinos preserve CPT. A phenomenological analysis is also reported showing the possibility to highlight the distinctions between Dirac and Majorana neutrinos.

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Section: Discussionmentioning

confidence: 99%

Discerning the Nature of Neutrinos: Decoherence and Geometric Phases

et al. 2020

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“…where the superscript c denotes the charge conjugated field. If right-handed neutrinos are allowed for, one has an analogous Majorana mass in terms of the right-handed components, namely which lead to the same oscillation formulae in absence of decoherence [171][172][173].…”

Section: Dirac and Majorana Neutrinosmentioning

confidence: 99%

Einstein, Planck and Vera Rubin: Relevant Encounters Between the Cosmological and the Quantum Worlds

et al. 2021

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In Cosmology and in Fundamental Physics there is a crucial question like: where the elusive substance that we call Dark Matter is hidden in the Universe and what is it made of? that, even after 40 years from the Vera Rubin seminal discovery [1] does not have a proper answer. Actually, the more we have investigated, the more this issue has become strongly entangled with aspects that go beyond the established Quantum Physics, the Standard Model of Elementary particles and the General Relativity and related to processes like the Inflation, the accelerated expansion of the Universe and High Energy Phenomena around compact objects. Even Quantum Gravity and very exotic Dark Matter particle candidates may play a role in framing the Dark Matter mystery that seems to be accomplice of new unknown Physics. Observations and experiments have clearly indicated that the above phenomenon cannot be considered as already theoretically framed, as hoped for decades. The Special Topic to which this review belongs wants to penetrate this newly realized mystery from different angles, including that of a contamination of different fields of Physics apparently unrelated. We show with the works of this ST that this contamination is able to guide us into the required new Physics. This review wants to provide a good number of these “paths or contamination” beyond/among the three worlds above; in most of the cases, the results presented here open a direct link with the multi-scale dark matter phenomenon, enlightening some of its important aspects. Also in the remaining cases, possible interesting contacts emerges. Finally, a very complete and accurate bibliography is provided to help the reader in navigating all these issues.

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“…Finally we theoretically study the effects of rotation on the neutrino energy deposition. 1 The propagation of neutrino in gravitational fields has been studied both in GR [58][59][60][61][62][63][64][65][66][67][68][69][70][71] and in modified gravity [72][73][74]. 0123456789().…”

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confidence: 99%

Neutrino pair annihilation ($$\nu {\bar{\nu }}\rightarrow e^-e^+$$) in the presence of quintessence surrounding a black hole

Lambiase

Mastrototaro

2021

Eur. Phys. J. C

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Quintessence fields, introduced to explain the speed-up of the Universe, might affect the geometry of spacetime surrounding black holes, as compared to the standard Schwarzschild and Kerr geometries. In this framework, we study the neutrino pairs annihilation into electron-positron pairs ($$\nu {\bar{\nu }}\rightarrow e^-e^+$$ ν ν ¯ → e - e + ) near the surface of a neutron star, focusing, in particular, on the Schwarzschild-like geometry in presence of quintessence fields. The effect of the latter is to increase the photon-sphere radius ($$R_{ph}$$ R ph ), increasing in such a way the maximum energy deposition rate near to $$R_{ph}$$ R ph . The rate turns out to be several orders of magnitude greater than the rate computed in the framework of General Relativity. These results might provide a rising in the GRBs energy emitted from a close binary neutron star system and might be used to constraints the parameters of the quintessence model. Finally we theoretically study the effects of rotation on the neutrino energy deposition.

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Neutrinos in curved spacetime: Particle mixing and flavor oscillations

Cited by 54 publications

References 43 publications

Discerning the Nature of Neutrinos: Decoherence and Geometric Phases

Discerning the Nature of Neutrinos: Decoherence and Geometric Phases

Einstein, Planck and Vera Rubin: Relevant Encounters Between the Cosmological and the Quantum Worlds

Neutrino pair annihilation ($$\nu {\bar{\nu }}\rightarrow e^-e^+$$) in the presence of quintessence surrounding a black hole

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