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Entanglement and collective flavor oscillations in a dense neutrino gas

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arxiv 1908.03511 v3 pith:3POFR6FL submitted 2019-08-09 hep-ph astro-ph.HEnucl-thquant-ph

classification hep-phastro-ph.HEnucl-thquant-ph
keywords neutrinoentanglementmany-bodybeyondcollectivegoingmean-fieldoscillations
verification ladder T0 review T1 audit T2 compute T3 formal
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We investigate the importance of going beyond the mean-field approximation in the dynamics of collective neutrino oscillations. To expand our understanding of the coherent neutrino oscillation problem, we apply concepts from many-body physics and quantum information theory. Specifically, we use measures of nontrivial correlations (otherwise known as "entanglement") between the constituent neutrinos of the many-body system, such as the entanglement entropy and the Bloch vector of the reduced density matrix. The relevance of going beyond the mean field is demonstrated by comparisons between the evolution of the neutrino state in the many-body picture vs the mean-field limit, for different initial conditions.

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Cited by 6 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Improved Approximations for Collective Neutrino Oscillations

    hep-ph 2026-07 conditional novelty 6.0 of 10

    Second-order BBGKY truncation of an su(n) one-plus-two-body Hamiltonian approximates collective neutrino dynamics beyond mean field at polynomial classical cost and reveals large-N phase and entanglement structure.

  2. Improved Approximations for Collective Neutrino Oscillations

    hep-ph 2026-07 conditional novelty 5.0 of 10

    A second-order BBGKY closure reproduces exact small-system neutrino dynamics about two orders of magnitude better than mean-field at polynomial cost, and predicts correlated large-N behavior.

  3. Collective neutrino oscillations: Many-body non-forward effects and non-classicality

    hep-ph 2026-06 unverdicted novelty 5.0 of 10

    In a neutrino-gas model, the many-body Hamiltonian yields different evolution timescales and asymptotics than the quantum kinetic approach with collisions, while quantum resources for the full case sit at the low end ...

  4. Neutrino helicity oscillations in astrophysical environments: a many-body approach

    hep-ph 2026-05 unverdicted novelty 5.0 of 10

    Many-body neutrino calculations in simple momentum-state configurations yield helicity conversion probabilities orders of magnitude above mean-field results due to momentum exchange.

  5. Quantum Simulation of Collective Neutrino Oscillations using Dicke States

    quant-ph 2026-04 unverdicted novelty 5.0 of 10

    New algorithms based on Dicke states enable qubit-efficient quantum simulations of collective neutrino oscillations with demonstrated performance on classical and quantum hardware.

  6. Singular Perturbations of Hamilton-Jacobi Equations in the Wasserstein Space

    math.OC 2025-08 unverdicted novelty 5.0 of 10

    The abstract claims a singular-perturbation limit theorem for second-order Hamilton-Jacobi equations on the Wasserstein space, but the submitted full text does not contain that paper.

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