Neutrino propagation in media and axis of complete polarization

Autor:	A. E. Kaloshin, D. M. Voronin
Jazyk:	angličtina
Rok vydání:	2019
Předmět:	Astrophysics QB460-466 Nuclear and particle physics. Atomic energy. Radioactivity QC770-798
Zdroj:	European Physical Journal C: Particles and Fields, Vol 79, Iss 2, Pp 1-9 (2019)
Druh dokumentu:	article
ISSN:	1434-6044 1434-6052
DOI:	10.1140/epjc/s10052-019-6659-x
Popis:	Abstract We construct a spectral representation of neutrino propagator in moving matter or in external magnetic field. In both cases there exists fixed four-dimensional axis of polarization, such that the corresponding spin projectors commute with propagator. As a result, all eigenvalues of propagator and, consequently, dispersion laws for neutrino in media are classified according to spin projection onto this axis. Use of the found spin projectors simplifies essentially the eigenvalue problem and allows to build spectral representation of propagator in moving matter or external magnetic field in analogy with the vacuum propagator.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/2dcebad1a65c47108a36f4789634d12e Zobrazit plný text záznamu View record in DOAJ Plný text ve formátu PDF Plný text ve formátu HTML
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