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Stationary and non-stationary solutions of the evolution equation for neutrino in matterстатья
Информация о цитировании статьи получена из
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Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 6 марта 2019 г.
- Авторы: Chukhnova A.V., Lobanov A.E.
- Журнал: EPJ Web of Conferences
- Том: 191
- Год издания: 2018
- Первая страница: 03002.01
- Последняя страница: 03002.11
- DOI: 10.1051/epjconf/201819103002
- Аннотация: We study solutions of the equation which describes the evolution of a neutrino propagating in dense homogeneous medium in the framework of the quantum field theory. In the two-flavor model the explicit form of Green function is obtained, and as a consequence the dispersion law for a neutrino in matter is derived. Both the solutions describing the stationary states and the spin-flavor coherent states of the neutrino are found. It is shown that the stationary states of the neutrino are different from the mass states, and the wave function of a state with a definite flavor should be constructed as a linear combination of the wave functions of the stationary states with coefficients, which depend on the mixing angle in matter. In the ultra-relativistic limit the wave functions of the spin-flavor coherent states coincide with the solutions of the quasi-classical evolution equation. Quasi-classical approximation of the wave functions of spin-flavor coherent states is used to calculate the probabilities of transitions between neutrino states with definite flavor and helicity.
- Добавил в систему: Лобанов Андрей Евгеньевич