In anisotropic neutrino gases, νν-bar pairing instabilities emerge when the excessive pair-occupation number distribution changes sign, producing pair conversions at growth rates comparable to fast flavor instabilities.
Johns, Neutrino many-body correlations, arXiv preprint arXiv:2305.04916 (2023)
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A tensor-network method enables simulations of inhomogeneous many-body neutrino flavor instabilities, showing earlier equilibration than mean-field approximations with differences arising from initial configurations and boundaries.
Many-body correlations disrupt the inhomogeneous fast flavor instability, with flavor transformation timescale scaling logarithmically with system size.
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 for HEP problems and mid-to-high for quantum chemistry.
Many-body neutrino calculations in simple momentum-state configurations yield helicity conversion probabilities orders of magnitude above mean-field results due to momentum exchange.
New algorithms based on Dicke states enable qubit-efficient quantum simulations of collective neutrino oscillations with demonstrated performance on classical and quantum hardware.
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Collective neutrino-antineutrino pair oscillations
In anisotropic neutrino gases, νν-bar pairing instabilities emerge when the excessive pair-occupation number distribution changes sign, producing pair conversions at growth rates comparable to fast flavor instabilities.
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Two-beam Multiparticle Many-body simulations of Inhomogeneous FFI
A tensor-network method enables simulations of inhomogeneous many-body neutrino flavor instabilities, showing earlier equilibration than mean-field approximations with differences arising from initial configurations and boundaries.
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Many-Body Simulations of the Fast Flavor Instability
Many-body correlations disrupt the inhomogeneous fast flavor instability, with flavor transformation timescale scaling logarithmically with system size.
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Collective neutrino oscillations: Many-body non-forward effects and non-classicality
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 for HEP problems and mid-to-high for quantum chemistry.
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Neutrino helicity oscillations in astrophysical environments: a many-body approach
Many-body neutrino calculations in simple momentum-state configurations yield helicity conversion probabilities orders of magnitude above mean-field results due to momentum exchange.
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Quantum Simulation of Collective Neutrino Oscillations using Dicke States
New algorithms based on Dicke states enable qubit-efficient quantum simulations of collective neutrino oscillations with demonstrated performance on classical and quantum hardware.