VSE knjižnice (vzajemna bibliografsko-kataložna baza podatkov COBIB.SI)
  • Certifying optimality of Bell inequality violations: noncommutative polynomial optimization through semidefinite programming and local optimization
    Hrga, Timotej ; Klep, Igor, matematik ; Povh, Janez, 1973-
    Bell inequalities are pillars of quantum physics in that their violations imply that certain properties of quantum physics (e.g., entanglement) cannot be represented by any classical picture of ... physics. In this article Bell inequalities and their violations are considered through the lens of noncommutative polynomial optimization. Optimality of these violations is certified for a large majority of a set of standard Bell inequalities, denoted A2-A89 in the literature. The main techniques used in the paper include the NPA hierarchy, i.e., the noncommutative version of the Lasserre semidefinite programming (SDP) hierarchies based on the Helton-McCullough Positivstellensatz,the Gelfand-Naimark-Segal (GNS) construction with a novel use of the Artin-Wedderburn theory for rounding and projecting, and nonlinear programming (NLP). A new "Newton chip"-like technique for reducing sizes of SDPs arising in the constructed polynomial optimization problems is presented.This technique is based on conditional expectations. Finally, noncommutative Gröbner bases are exploited to certify when an optimizer (a solution yielding optimum violation) cannot be extracted from a dual SDP solution.
    Vir: SIAM journal on optimization. - ISSN 1052-6234 (Vol. 34, iss. 2, Jun. 2024, str. 1341-1373)
    Vrsta gradiva - članek, sestavni del ; neleposlovje za odrasle
    Leto - 2024
    Jezik - angleški
    COBISS.SI-ID - 197627907

    Povezava(-e):

    https://epubs.siam.org/doi/10.1137/22M1473340
    DOI

vir: SIAM journal on optimization. - ISSN 1052-6234 (Vol. 34, iss. 2, Jun. 2024, str. 1341-1373)
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