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of 83
pro vyhledávání: '"Johns, Lucas"'
Autor:
Johns, Lucas
Flavor ergodicity implies that angular crossings are necessary and sufficient for fast instability.
Comment: 3 pages
Comment: 3 pages
Externí odkaz:
http://arxiv.org/abs/2402.08896
Publikováno v:
Phys. Rev. D 109, 103037 (2024)
Collective neutrino oscillations are typically studied using the lowest-order quantum kinetic equation, also known as the mean-field approximation. However, some recent quantum many-body simulations suggest that quantum entanglement among neutrinos m
Externí odkaz:
http://arxiv.org/abs/2402.05022
Autor:
Johns, Lucas
Approximating neutrino oscillations as subgrid physics is an appealing prospect for simulators of core-collapse supernovae and neutron-star mergers. Because flavor instabilities quickly lead to quasisteady states in oscillation calculations, it is wi
Externí odkaz:
http://arxiv.org/abs/2401.15247
We present a new subgrid model for neutrino quantum kinetics, which is primarily designed to incorporate effects of collective neutrino oscillations into neutrino-radiation-hydrodynamic simulations for core-collapse supernovae and mergers of compact
Externí odkaz:
http://arxiv.org/abs/2312.16285
Autor:
Johns, Lucas, Rodriguez, Santiago
Neutrinos in core-collapse supernovae and neutron-star mergers are susceptible to flavor instabilities of three kinds: slow, fast, and collisional. Prior work has established mappings of the first two onto abstract mechanical systems in flavor space,
Externí odkaz:
http://arxiv.org/abs/2312.10340
Neutrinos play pivotal roles in determining fluid dynamics, nucleosynthesis, and their observables in core-collapse supernova (CCSN) and binary neutron star merger (BNSM). In this paper, we present a novel phenomenon, collisional flavor swap, in whic
Externí odkaz:
http://arxiv.org/abs/2309.02619
Autor:
Johns, Lucas
The title theory is formulated. It entails a quantum-coherent variant of the Fermi-Dirac distribution and casts new light on neutrino oscillations. It might enable the incorporation of neutrino mixing into the modeling of core-collapse supernovae and
Externí odkaz:
http://arxiv.org/abs/2306.14982
Autor:
Johns, Lucas
This paper responds to suggestions that the standard approach to collective neutrino oscillations leaves out potentially important quantum many-body correlations. Arguments in favor of this idea have been based on calculations that, on close scrutiny
Externí odkaz:
http://arxiv.org/abs/2305.04916
Publikováno v:
Phys. Rev. D 108, 083002 (2003)
Charged-current neutrino processes such as $\nu_e + n \rightleftharpoons p + e^-$ and $\bar\nu_e + p \rightleftharpoons n + e^+$ destroy the flavor coherence among the weak-interaction states of a single neutrino and thus damp its flavor oscillation.
Externí odkaz:
http://arxiv.org/abs/2212.03750
Autor:
Xiong, Zewei, Wu, Meng-Ru, Martínez-Pinedo, Gabriel, Fischer, Tobias, George, Manu, Lin, Chun-Yu, Johns, Lucas
We implement a multi-group and discrete-ordinate neutrino transport model in spherical symmetry which allows to simulate collective neutrino oscillations by including realistic collisional rates in a self-consistent way. We utilize this innovative mo
Externí odkaz:
http://arxiv.org/abs/2210.08254