4 found
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  1.  14
    Bell’s Nonlocality in a General Nonsignaling Case: Quantitatively and Conceptually.Elena R. Loubenets - 2017 - Foundations of Physics 47 (8):1100-1114.
    Quantum violation of Bell inequalities is now used in many quantum information applications and it is important to analyze it both quantitatively and conceptually. In the present paper, we analyze violation of multipartite Bell inequalities via the local probability model—the LqHV model, incorporating the LHV model only as a particular case and correctly reproducing the probabilistic description of every quantum correlation scenario, more generally, every nonsignaling scenario. The LqHV probability framework allows us to construct nonsignaling analogs of Bell inequalities and (...)
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  2. “Local Realism”, Bell’s Theorem and Quantum “Locally Realistic” Inequalities.Elena R. Loubenets - 2005 - Foundations of Physics 35 (12):2051-2072.
    Based on the new general framework for the probabilistic description of experiments, introduced in [E.R. Loubenets, Research Report No 8, MaPhySto, University of Aarhus, Denmark (2003); Proceedings Conference “Quantum Theory, Reconsideration of Foundations”, Ser. Math. Modeling, Vol. 10 (University Press, Vaxjo, 2004), pp. 365–385], we analyze in mathematical terms the link between the validity of Bell-type inequalities under joint experiments upon a system of any type and the physical concept of “local realism”. We prove that the violation of Bell-type inequalities (...)
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  3.  11
    Context-Invariant and Local Quasi Hidden Variable Modelling Versus Contextual and Nonlocal HV Modelling.Elena R. Loubenets - 2015 - Foundations of Physics 45 (7):840-850.
    For the probabilistic description of all the joint von Neumann measurements on a D-dimensional quantum system, we present the specific example of a context-invariant quasi hidden variable model, proved in Loubenets to exist for each Hilbert space. In this model, a quantum observable X is represented by a variety of random variables satisfying the functional condition required in quantum foundations but, in contrast to a contextual model, each of these random variables equivalently models X under all joint von Neumann measurements, (...)
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  4.  25
    On Relations Between Probabilities Under Quantum and Classical Measurements.Andrei Y. Khrennikov & Elena R. Loubenets - 2004 - Foundations of Physics 34 (4):689-704.
    We show that the so-called quantum probabilistic rule, usually introduced in the physical literature as an argument of the essential distinction between the probability relations under quantum and classical measurements, is not, as it is commonly accepted, in contrast to the rule for the addition of probabilities of mutually exclusive events. The latter is valid under all experimental situations upon classical and quantum systems. We discuss also the quantum measurement situation that is similar to the classical one, described by the (...)
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