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Bell's jump process in discrete time

J. Barrett1, M. Leifer1 and R. Tumulka2

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The jump process introduced by J. S. Bell in 1986, for defining a quantum field theory without observers, presupposes that space is discrete whereas time is continuous. In this letter, our interest is to find an analogous process in discrete time. We argue that a genuine analog does not exist, but provide examples of processes in discrete time that could be used as a replacement.


PACS

03.65.Ta Foundations of quantum mechanics; measurement theory

02.50.Ga Markov processes

Subjects

Computational physics

Quantum information and quantum mechanics

Dates

Issue 5 (December 2005)

Received 13 June 2005, accepted for publication 29 September 2005, in final form 29 September 2005

Published 28 October 2005



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