We investigate and quantify bipartite and tripartite entanglement measures in two- and three-flavor neutrino oscillations. The bipartite entanglement is analogous to the entanglement swapping resulting from a beam splitter in quantum optics. We calculate various entanglement measures, such as the concurrence, negativity, and three-tangle for the three-neutrino system. The significant result is that a monogamy inequality in terms of negativity leads to a residual entanglement, implying genuine tripartite entanglement in the three-neutrino system. We establish an analogy of the three-neutrino state with a generalized W-state class in quantum optics.

中文翻译：

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中微子振荡中的三方纠缠

我们研究和量化二味和三味中微子振荡中的二分和三分纠缠测量。二分纠缠类似于量子光学中的分束器产生的纠缠交换。我们计算了各种纠缠度量，例如三中微子系统的同时性、负性和三缠结。显着的结果是，就消极性而言，一夫一妻制的不平等导致了残余纠缠，这意味着三中微子系统中存在真正的三方纠缠。我们用量子光学中的广义 W 态类建立了三中微子态的类比。