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Entanglement and collective flavor oscillations in a dense neutrino gas
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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.
Forward citations
Cited by 2 Pith papers
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Improved Approximations for Collective Neutrino Oscillations
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.
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Singular Perturbations of Hamilton-Jacobi Equations in the Wasserstein Space
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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