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arXiv 1909.02735hep-phastro-ph.COgr-qc
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引力和宇宙学背景中的中微子振荡

Neutrino oscillations in gravitational and cosmological backgrounds

George Koutsoumbas, Dimitrios Metaxas

摘要:

我们利用程函近似计算了两个中微子质量本征态在引力波或标量扰动背景下传播时的附加相移。我们评论的依赖性的结果的扰动的特性,给出一些数量级的估计,并发现,虽然小,所产生的相位差持续大红移,我们的近似的有效性。

英文摘要:

We use the eikonal approximation in order to calculate the additional phase shift between two neutrino mass eigenstates during their propagation in a background of gravitational wave or scalar perturbations in the flat and the FRW spacetime metric. We comment on the dependence of the results on the characteristics of the perturbations, give some order-of-magnitude estimates, and find that, although small, the resulting phase difference persists for large redshifts, up to the validity of our approximations.

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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