Decoherence of hydrodynamic histories: A simple spin model.

  title={Decoherence of hydrodynamic histories: A simple spin model.},
  author={Brun and Halliwell},
  journal={Physical review. D, Particles and fields},
  volume={54 4},
  • Brun, Halliwell
  • Published 8 January 1996
  • Physics, Medicine
  • Physical review. D, Particles and fields
In the context of the decoherent histories approach to the quantum mechanics of closed systems, Gell-Mann and Hartle have argued that the variables typically characterizing the quasiclassical domain of a large complex system are the integrals over small volumes of locally conserved densities\char22{}hydrodynamic variables. The aim of this paper is to exhibit some simple models in which approximate decoherence arises as a result of local conservation. We derive a formula which shows the explicit… 
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