Neutrino flavor mixing with moments
Neutrino flavor mixing with moments
复制标题
中微子味道与瞬间混合
DOI:
10.1103/physrevd.105.123036
复制
发表时间:
2022
影响因子:
5
通讯作者:
Fröhlich, Carla
中科院分区:
文献类型:
--
作者:
Myers, McKenzie;Cooper, Theo;Warren, MacKenzie;Kneller, Jim;McLaughlin, Gail;Richers, Sherwood;Grohs, Evan;Fröhlich, Carla
The successful transition from core-collapse supernova simulations using classical neutrino transport to simulations using quantum neutrino transport will require the development of methods for calculating neutrino flavor transformations that mitigate the computational expense. One potential approach is the use of angular moments of the neutrino field, which has the added appeal that there already exist simulation codes which make use of moments for classical neutrino transport. Evolution equations for quantum moments based on the quantum kinetic equations can be straightforwardly generalized from the evolution of classical moments based on the Boltzmann equation. We present an efficient implementation of neutrino transformation using quantum angular moments in the free streaming, spherically symmetric bulb model. We compare the results against analytic solutions and the results from more exact multiangle neutrino flavor evolution calculations. We find that our moment-based methods employing scalar closures predict, with good accuracy, the onset of collective flavor transformations seen in the multiangle results. However in some situations they overestimate the coherence of neutrinos traveling along different trajectories. More sophisticated quantum closures may improve the agreement between the inexpensive moment-based methods and the multiangle approach.
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DOI:
--
发表时间:
2021
期刊:
影响因子:
--
作者:
Ryuichiro Akaho;Akira Harada;Hiroki Nagakura;Laura Barrio;Shoichi Yamada
通讯作者:
Shoichi Yamada
影响因子:
5
作者:
Johns, Lucas;Nagakura, Hiroki;Fuller, George M.;Burrows, Adam
通讯作者:
Burrows, Adam
影响因子:
8.6
作者:
A. Mirizzi;P. Serpico
通讯作者:
P. Serpico
影响因子:
6.5
作者:
H. Bloch;P. Tremblin;M. Gonz'alez;T. Padioleau;E. Audit
通讯作者:
E. Audit
DOI:
--
发表时间:
2013
期刊:
影响因子:
--
作者:
A. Vlasenko;G. Fuller;V. Cirigliano
通讯作者:
V. Cirigliano