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Analytical characterization of the genuine multiparticle negativity

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arxiv 1401.2424 v2 pith:UD3L34J6 submitted 2014-01-10 quant-ph

Martin Hofmann , Tobias Moroder , Otfried Gühne This is my paper · ORCID
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keywords genuinemeasuremultiparticleentanglementnegativitystatesanalyticalanalytically
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abstract

The genuine multiparticle negativity is a measure of genuine multiparticle entanglement which can be computed numerically. We present several results how this entanglement measure can be characterized analytically. First, we show that with an appropriate normalization this measure can be seen as coming from a mixed convex roof construction. Based on this, we determine its value for $n$-qubit GHZ-diagonal states and four-qubit cluster-diagonal states.

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  1. Tripartite Entanglement in $e^+ e^- \to t \bar{t} Z$

    hep-ph 2026-06 unverdicted novelty 6.0 of 10

    Computes entanglement negativities for the tripartite spin system in e+e- -> ttZ and projects that collective entanglement is accessible but genuine multipartite entanglement has limited sensitivity at a polarized ILC...

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