物质中集体中微子振荡与CP破坏
Collective neutrinos oscillation in matter and CP-violation
摘要：
我们探讨了CP破坏对稠密环境中中微子传播的影响，例如在核心坍缩超新星中，中微子自相互作用诱导非线性演化方程。我们证明，电子（反）中微子通量是不敏感的CP破坏相，如果μ子和τ中微子与物质的相互作用类似。另一方面，我们的数值计算表明，新的功能出现，因为非线性和通量依赖的演化方程，当μ子和τ中微子有不同的通量在中微子层（由于环路校正或物理超越标准模型）。特别是，电子（反）中微子的概率和流量依赖于CP破坏阶段。我们还讨论了中微子折射率的辐射修正引起的CP效应。
英文摘要：
We explore CP violation effects on the neutrino propagation in dense environments, such as in core-collapse supernovae, where the neutrino self-interaction induces non-linear evolution equations. We demonstrate that the electron (anti)neutrino fluxes are not sensitive to the CP violating phase if the muon and tau neutrinos interact similarly with matter. On the other hand, we numerically show that new features arise, because of the non-linearity and the flux dependence of the evolution equations, when the muon and tau neutrinos have different fluxes at the neutrinosphere (due to loop corrections or of physics beyond the Standard Model). In particular, the electron (anti)neutrino probabilities and fluxes depend upon the CP violating phase. We also discuss the CP effects induced by radiative corrections to the neutrino refractive index.
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