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From Holant to Quantum Entanglement and Back

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arxiv 2004.05706 v1 pith:7EYDWDCY submitted 2020-04-12 cs.CC quant-ph

classification cs.CCquant-ph
keywords holantentanglementquantumtheoryderiveproblemspropertiesqubits
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abstract

Holant problems are intimately connected with quantum theory as tensor networks. We first use techniques from Holant theory to derive new and improved results for quantum entanglement theory. We discover two particular entangled states $|{\Psi_6}\rangle$ of 6 qubits and $|{\Psi_8}\rangle$ of 8 qubits respectively, that have extraordinary and unique closure properties in terms of the Bell property. Then we use entanglement properties of constraint functions to derive a new complexity dichotomy for all real-valued Holant problems containing an odd-arity signature. The signatures need not be symmetric, and no auxiliary signatures are assumed.

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Cited by 1 Pith paper

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  1. From an odd arity signature to a Holant dichotomy

    cs.CC 2025-02 conditional novelty 8.0 of 10

    Complex-valued Holant with a non-trivial odd-arity signature is classified: every instance is either #P-hard or in FPNP.

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