Hidden Variables and the Large-Scale Structure of Spacetime

Details Hidden Variables and the Large-Scale Structure of Spacetime Hidden Variables and the Large-Scale Structure of Spacetime

2005-04-02

arxiv.org/abs/quant-ph/0504011v2

"Einstein, Relativity and Absolute Simultaneity", eds. W. L. Craig and Q. Smith (Routledge, London, 2008), pp. 125--155

Physics

Quantum Physics

30 pages. Minor changes. To be published in: "Absolute Simultaneity", eds. W. L. Craig and Q. Smith (Routledge, London, 2005)

Scientific paper

We discuss how to embed quantum nonlocality in an approximately classical spacetime background, a question which must be answered irrespective of any underlying microscopic theory of spacetime. We argue that, in deterministic hidden-variables theories, the choice of spacetime kinematics should be dictated by the properties of generic non-equilibrium states, which allow nonlocal signalling. Such signalling provides an operational definition of absolute simultaneity, which may naturally be associated with a preferred foliation of classical spacetime. The argument applies to any deterministic hidden-variables theory, and to both flat and curved spacetime backgrounds. We include some critical discussion of Einstein's 1905 'operational' approach to relativity, and compare it with that of Poincare.

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