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arXiv 1008.3115hep-phastro-ph.HEhep-th
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相对论量子力学描述的Dirac中微子的自旋味振荡

Spin-flavor oscillations of Dirac neutrinos described by relativistic quantum mechanics

Maxim Dvornikov

摘要:

用相对论性量子力学方法研究了狄拉克中微子在物质和磁场中的自旋味振荡。利用大质量中微子波动方程的精确解,考虑外场,导出了控制中微子自旋味振荡的有效哈密顿量。然后证明了我们的方法与常用的量子力学方法的一致性。对通常的有效哈密顿量的修正导致了中微子振荡中新共振的出现。讨论了超新星膨胀包层中自旋味中微子振荡的应用。特别是,右极化的电子中微子和额外的不育中微子之间的过渡研究现实的背景物质和磁场分布。另外还分析了纵向磁场、物质极化和非标准贡献对中微子有效势的影响。

英文摘要:

Spin-flavor oscillations of Dirac neutrinos in matter and a magnetic field are studied using the method of relativistic quantum mechanics. Using the exact solution of the wave equation for a massive neutrino, taking into account external fields, the effective Hamiltonian governing neutrino spin-flavor oscillations is derived. Then the The consistency of our approach with the commonly used quantum mechanical method is demonstrated. The obtained correction to the usual effective Hamiltonian results in the appearance of the new resonance in neutrino oscillations. Applications to spin-flavor neutrino oscillations in an expanding envelope of a supernova are discussed. In particular, transitions between right-polarized electron neutrinos and additional sterile neutrinos are studied for realistic background matter and magnetic field distributions. The influence of other factors such as the longitudinal magnetic field, the matter polarization, and the non-standard contributions to the neutrino effective potential, is also analyzed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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