论文标题
中微子的破裂在哪里
Where Neutrino Decoherence Lies
论文作者
论文摘要
最近，对真空中中微子振荡的一些研究并未发现从不同质量本质态中中微子的波盒分离的波动包分离的腐蚀性很长。我们表明，这种破坏性将存在于一种处理中，包括任何导致最终状态对中微子的排放和吸收时间的机制。我们的演示是在3+1d $ v-a $模型中，但是该模型的细节导致了总体因素，这不会影响我们的结论。这使我们可以考虑更简单的模型。在那里，我们表明，如果测量最终状态颗粒的位置，或与环境纠缠在一起，则脱谐性会潮湿中微子的振荡。我们还表明，波数据包扩散会导致脱碳最终饱和，而无需完全抑制振荡。
Recently, several studies of neutrino oscillations in the vacuum have not found the decoherence long expected from the separation of wave packets of neutrinos in different mass eigenstates. We show that such decoherence will, on the other hand, be present in a treatment including any mechanism which leads to a dependence of the final state on both the neutrino's emission and absorption time. Our demonstration is in the 3+1d $V-A$ model, however the details of this model lead to an overall factor which does not affect our conclusions. This allows us to consider a simpler model. There we show that if the positions of the final state particles are measured, or equivalently entangled with the environment, then decoherence will damp neutrino oscillations. We also show that wave packet spreading can cause the decoherence to eventually saturate, without completely suppressing the oscillations.
