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Locality and Causality in Hidden Variables Models of Quantum Theory | | Stefan Teufel
; Karin Berndl
; Detlef Dürr
; Sheldon Goldstein
; Nino Zangh`{i}
; | | Date: |
6 Sep 1996 | | Journal: | Phys.Rev. A56 (1997) 1217 | | Subject: | quant-ph | | Abstract: | Motivated by Popescu’s example of hidden nonlocality, we elaborate on the conjecture that quantum states that are intuitively nonlocal, i.e., entangled, do not admit a local causal hidden variables model. We exhibit quantum states which either (i) are nontrivial counterexamples to this conjecture or (ii) possess a new kind of more deeply hidden irreducible nonlocality. Moreover, we propose a nonlocality complexity classification scheme suggested by the latter possibility. Furthermore, we show that Werner’s (and similar) hidden variables models can be extended to an important class of generalized observables. Finally a result of Fine on the equivalence of stochastic and deterministic hidden variables is generalized to causal models. | | Source: | arXiv, quant-ph/9609005 | | Services: | Forum | Review | PDF | Favorites | |
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