Neutrino decoherence from quantum gravitational stochastic perturbations

Stuttard, T.; Jensen, Mikkel L.

doi:10.1103/physrevd.102.115003

Cited by 41 publications

(45 citation statements)

References 63 publications

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“…flavor-violating processes [1392], resulting in a potentially strong decoherence effect. Specific decoherence operators for a range of scenarios are proposed in [1393].…”

Section: Neutrino Decoherencementioning

confidence: 99%

See 1 more Smart Citation

Quantum gravity phenomenology at the dawn of the multi-messenger era -- A review

Addazi,

Alvarez-Muniz,

Batista

et al. 2021

Preprint

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The exploration of the universe has recently entered a new era thanks to the multi-messenger paradigm, characterized by a continuous increase in the quantity and quality of experimental data that is obtained by the detection of the various cosmic messengers (photons, neutrinos, cosmic rays and gravitational waves) from numerous origins. They give us information about their sources in the universe and the properties of the intergalactic medium. Moreover, multi-messenger astronomy opens up the possibility to search for phenomenological signatures of quantum gravity. On the one hand, the most energetic events allow us to test our physical theories at energy regimes which are not directly accessible in accelerators; on the other hand, tiny effects in the propagation of very high energy particles could be amplified by cosmological distances. After decades of merely theoretical investigations, the possibility of obtaining phenomenological indications of Planck-scale effects is a revolutionary step in the quest for a quantum theory of gravity, but it requires cooperation between different communities of physicists (both theoretical and experimental). This review, prepared within the COST Action CA18108 "Quantum gravity phenomenology in the multi-messenger approach", is aimed at promoting this cooperation by giving a state-of-the art account of the interdisciplinary expertise that is needed in the effective search of quantum gravity footprints in the production, propagation and detection of cosmic messengers.

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“…flavor-violating processes [1392], resulting in a potentially strong decoherence effect. Specific decoherence operators for a range of scenarios are proposed in [1393].…”

Section: Neutrino Decoherencementioning

confidence: 99%

“…where n is a power-law index to be defined by theory or tested by experiment. When considering Planck scale physics this can be written [1392,1393]:…”

Section: Neutrino Decoherencementioning

confidence: 99%

Quantum gravity phenomenology at the dawn of the multi-messenger era -- A review

Addazi,

Alvarez-Muniz,

Batista

et al. 2021

Preprint

View full text Add to dashboard Cite

show abstract

“…In particular, in [43] quantum gravitational analogues of the MSW effect and of foam models endowed with stochastic fluctuations of the background are presented as possible alternative sources of decoherence in neutrino oscillations. A similar analysis has been recently developed in [52], where the influence of quantum gravity on neutrino propagation and decoherence has been investigated with a focus on the case of neutrino interactions with virtual black holes produced by spacetime fluctuations. The study of the above aspects is quite demanding and will be object of future works [49].…”

Section: Discussionmentioning

confidence: 96%

Gravitational effects on neutrino decoherence in Lense-Thirring metric

Luciano¹,

Blasone²

2021

Preprint

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We analyze gravity effects on neutrino wave packet decoherence. As a specific example, we consider the gravitational field of a spinning spherical body described by the Lense-Thirring metric. By working in the weak-field limit and employing Gaussian wave packets, we show that the characteristic coherence length of neutrino oscillation processes is nontrivially affected, the corrections being dependent on the mass and angular velocity of the gravity source. Possible experimental implications are finally discussed.

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“…Neutrino oscillations have been studied in the literature in various gravitational physical setups. For example, neutrino flavor oscillations in stochastic gravitational waves have been studied in [4], while neutrino decoherence from quantum gravitational stochastic perturbations has been studied in [5]. Effects like spin-flip or helicity transitions are also studied in a gravitational setup [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Neutrino flavor oscillations in a rotating spacetime

Swami¹

2022

Preprint

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We study neutrino oscillations in a rotating spacetime under the weak gravity limit for the neutrino trajectories constrained in the equatorial plane. Using the asymptotic form of the Kerr metric, we show that the gravitational source's rotation non-trivially modifies the neutrino phase. Further, we find that the flavor transition probability deviates more prominently from the Schwarzschild spacetime results when neutrinos are produced and detected on the same side of the gravitational source, i.e., neutrino propagates only towards or away from the gravitational source. For the neutrino weak gravity lensing in the equatorial plane, we find that the effects of gravitational object spin on the neutrino phase are subdominant compared with the Schwarzschild spacetime neutrino phase. However, the rotational effect can be comparable with the gravitational mass effect in the neutrino lensing if the naked singularity condition that bounds the Kerr rotation is violated. Furthermore, we find that the neutrino phase for the non-radial neutrino emission depends on the relative angular momentum direction of the neutrino and the gravitational source. For an asymptotic observer, we find that the neutrino phase, in the leading orders of gravitational spin corrections, differs from the Schwarzschild spacetime due to the difference in the proper spatial distance of the neutrino trajectory that connects the neutrino source and the detector. In contrast, the higher-order terms, other than those arriving from the proper spatial distance, which lead to the deviation from the Schwarzschild spacetime neutrino phase, are significantly suppressed. Further, we discuss neutrino gravitational decoherence. We find that decoherence length is also sensitive to the relative direction of the neutrino angular momentum and the gravitational source rotation. Finally, we demonstrate results using numerical examples.

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Neutrino decoherence from quantum gravitational stochastic perturbations

Cited by 41 publications

References 63 publications

Quantum gravity phenomenology at the dawn of the multi-messenger era -- A review

Quantum gravity phenomenology at the dawn of the multi-messenger era -- A review

Gravitational effects on neutrino decoherence in Lense-Thirring metric

Neutrino flavor oscillations in a rotating spacetime

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