The paper derives per-class bounds linking the tangle to single-qubit Bloch norms for pure three-qubit states, conjectures a geometric hyperdeterminant formula, and tests both on spin-chain eigenstates.
which leads us to the following geometrical ansatz for the tangle: τ (⃗ r) = 1 − |⃗ r|2 3 − d (⃗ r, Vline) · F(⃗ r) (15) where |ψ⟩ ∈ GHZ excluding type 5 and F (⃗ r) ≥ 0
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Visualizing Three-Qubit Entanglement
The paper derives per-class bounds linking the tangle to single-qubit Bloch norms for pure three-qubit states, conjectures a geometric hyperdeterminant formula, and tests both on spin-chain eigenstates.