High Energy Physics - Phenomenology · arXiv:2103.15313 v2 · submitted 29 Mar 2021
Neutrino signals of lightcone fluctuations resulting from fluctuating space-time
The paper says
“Using simulations of neutrino mass states propagating in a fluctuating environment, we determine an analytic decoherence operator in the framework of open quantum systems to quantitatively evaluate neutrino decoherence resulting from lightcone fluctuations, allowing experimental constraints on neutrino decoherence to be connected to Planck scale fluctuations in space-time and γ-ray results.”
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Abstract
One of the most common expectations of a quantum theory of gravity is that space-time is uncertain or fluctuating at microscopic scales, making it a stochastic medium for particle propagation. Particles traversing this space-time may experience fluctuations in travel times or velocities, together referred to as lightcone fluctuations, with even very small effects potentially accumulating into observable signals over large distances. In this work we present a heuristic model of lightcone fluctuations and study the resulting modifications to neutrino propagation, including neutrino decoherence and arrival time spread. We show the expected scale of such effects due to `natural' Planck scale physics and consider how they may be observed in neutrino detectors, and compare the potential of neutrinos to γ-ray astronomy. Using simulations of neutrino mass states propagating in a fluctuating environment, we determine an analytic decoherence operator in the framework of open quantum systems to quantitatively evaluate neutrino decoherence resulting from lightcone fluctuations, allowing experimental constraints on neutrino decoherence to be connected to Planck scale fluctuations in space-time and γ-ray results.
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abstract compiled · 2026-09-23 · no language-model review
How the main claim is stated: asserted 1.00
What the abstract itself states, as probabilities: claims first 0.04 · states limitation 0.29 · human participants 0.02 · controlled comparison 0.12 · randomized assignment 0.01 · states quantitative result 0.10 · compares with prior results 0.85 · mentions code or data availability 0.02
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This table labels the abstract only (arXiv listing abstract v2). The number is the probability the classifier gave the label.
| Sentence | Role | The authors' own work | States the main conclusion | Strength |
|---|---|---|---|---|
| One of the most common expectations of a quantum theory of gravity is that space-time is uncertain or fluctuating at microscopic scales, making it a stochastic medium for particle propagation. | background 1.00 | 0.03 | 0.03 | hedged possibility 0.62 |
| Particles traversing this space-time may experience fluctuations in travel times or velocities, together referred to as lightcone fluctuations, with even very small effects potentially accumulating into observable signals over large distances. | background 1.00 | 0.04 | 0.04 | hedged possibility 1.00 |
| In this work we present a heuristic model of lightcone fluctuations and study the resulting modifications to neutrino propagation, including neutrino decoherence and arrival time spread. | contribution 0.99 | 0.94 | 0.08 | asserted 0.96 |
| We show the expected scale of such effects due to `natural' Planck scale physics and consider how they may be observed in neutrino detectors, and compare the potential of neutrinos to $\gamma$-ray astronomy. | contribution 0.98 | 0.78 | 0.16 | asserted 0.59 |
| Using simulations of neutrino mass states propagating in a fluctuating environment, we determine an analytic decoherence operator in the framework of open quantum systems to quantitatively evaluate neutrino decoherence resulting from lightcone fluctuations, allowing experimental constraints on neutrino decoherence to be connected to Planck scale fluctuations in space-time and $\gamma$-ray results. | method 0.75 | 0.96 | 0.38 | asserted 1.00 |
What kind of paper the classifier reports this is: theoretical result 0.99 · evidence from simulation or computation 0.77
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Compiled by classifier-1.13.0 via TypeSafe API, question bank abstract-p1-20260923, 2026-09-23: 1 request, 4,475 input tokens.
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10 arXiv papers cite this in 20 sentences
Papers citing it · 10 sentences without a confident label
Compares with it 2 papers
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Interestingly, this result is similar to the power-law dependence seen in wave packet separation-induced neutrino decoherence in reactor experiments [ref] and from lightcone fluctuations [ref] .
Unearthing Neutrino Decoherence from Quantum Spacetime: An Open Quantum Systems Perspective · Energy Dependence of Decoherence in $κ$-Minkowski Spacetime · 1.00
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It is also of interest that the decoherence parameters dependent on different frequencies, i.e. different mass splittings ($Δm_21^2$, $Δm_31^2$ and $Δm_32^2$) are a common feature in [ref] as well.
Neutrino Decoherence from Generalised Uncertainty · LQGUP Case · 0.98
Cites it as background 4 papers
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Due to the ambiguity in the theory of quantum gravity sometimes an empirical approach is taken and a power law energy dependence of $Γ$ is assumed [ref] , [equation] In some studies, experimental observations have been used to determine the validity of different values of $n$ in a model independent way [ref] .
Neutrino Decoherence from Generalised Uncertainty · Introduction · 0.98
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There are numerous new physics scenarios affecting neutrino oscillations [ref] including neutrino decay [ref] , Lorentz invariance violation and CPT violation [ref] , background dark matter fields [ref] , neutrino decoherence or wave-packet separation [ref] , unitary violation [ref] , non-standard neutrino interactions (NSI) [ref] , and sterile neutrinos [ref] .
How to Identify Different New Neutrino Oscillation Physics Scenarios at DUNE · New Physics Scenarios · 0.99
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In this method, one describes the neutrinos as a subsystem interacting with the environment, causing the dissipative effects in the neutrino oscillation phenomenon which have been discussed in a variety of oscillation experiments [ref] .
Decoherence in Neutrino Oscillation at the ESSnuSB Experiment · Introduction · 0.90
What it cites · 31 sentences without a confident label
Compares with 5 papers
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Alternatively, existing constraints on neutrino decoherence can be re-interpreted in terms of this underlying model, and the results compared to corresponding constraints on space-time fluctuations from $γ$-ray observations [ref] .
2001.06016 · Analytic decoherence operator · 0.91
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We thus seem that both approaches (distance vs. metric fluctuations, simulation vs. analytic methods) produce qualitatively the same neutrino decoherence effects, with $exp-L^2$ damping[Referred to as Gaussian damping in [ref] .] dependent on $1/λ^2$ and a parameter characterising the uncertain/fluctuating space-time.
Methods of approaching decoherence in the flavour sector due to space-time foam · Comparison to other studies · 1.00
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This is distinct from so-called relaxation scenarios [ref] where the limiting case is equal populations of all flavors, as was identified in our previous work for certain $ν$-VBH interaction models [ref] .
Quantum decoherence and relaxation in long-baseline neutrino data · Simulating neutrinos propagating in fluctuating space-time · 0.96
Cites as background 20 papers
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Neutrino decoherence is often represented using an open quantum system formalism [ref] considering both the neutrino and its environment, and beyond neutrinos this formalism has also be employed to study decoherence resulting from gravitational sources more generally [ref] .
Reconciling results of LSND, MiniBooNE and other experiments with soft decoherence · Analytic decoherence operator · 0.92
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Neutrino decoherence is often represented using an open quantum system formalism [ref] considering both the neutrino and its environment, and beyond neutrinos this formalism has also be employed to study decoherence resulting from gravitational sources more generally [ref] .
Determination of the Atmospheric Neutrino Flux and Searches for New Physics with AMANDA-II · Analytic decoherence operator · 0.92
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Neutrino decoherence is often represented using an open quantum system formalism [ref] considering both the neutrino and its environment, and beyond neutrinos this formalism has also be employed to study decoherence resulting from gravitational sources more generally [ref] .
Revealing neutrino nature and $CPT$ violation with decoherence effects · Analytic decoherence operator · 0.92
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