skip to main content

SciTech ConnectSciTech Connect

Title: Differentiability of correlations in realistic quantum mechanics

We prove a version of Bell’s theorem in which the locality assumption is weakened. We start by assuming theoretical quantum mechanics and weak forms of relativistic causality and of realism (essentially the fact that observable values are well defined independently of whether or not they are measured). Under these hypotheses, we show that only one of the correlation functions that can be formulated in the framework of the usual Bell theorem is unknown. We prove that this unknown function must be differentiable at certain angular configuration points that include the origin. We also prove that, if this correlation is assumed to be twice differentiable at the origin, then we arrive at a version of Bell’s theorem. On the one hand, we are showing that any realistic theory of quantum mechanics which incorporates the kinematic aspects of relativity must lead to this type of rough correlation function that is once but not twice differentiable. On the other hand, this study brings us a single degree of differentiability away from a relativistic von Neumann no hidden variables theorem.
Authors:
 [1] ;  [2] ;  [3] ;  [4]
  1. Instituto de Matemática, UFRJ, CEP 21941-909 Rio de Janeiro, Rio de Janeiro (Brazil)
  2. Instituto de Matemática e Estatística, USP, Rua do Matão 1010, SP 05508-090 São Paulo, São Paulo (Brazil)
  3. IMPA, Estrada Dona Castorina 110, 22460-320 Rio de Janeiro, Rio de Janeiro (Brazil)
  4. IBM, P.O. Box 218, Yorktown Heights, New York 10598 (United States)
Publication Date:
OSTI Identifier:
22479597
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Mathematical Physics; Journal Volume: 56; Journal Issue: 9; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; BELL THEOREM; CAUSALITY; CORRELATION FUNCTIONS; CORRELATIONS; HIDDEN VARIABLES; LOCALITY; ORIGIN; QUANTUM MECHANICS; RELATIVISTIC RANGE