Coarse graining and decoherence translated into von Neumann language

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The notions of coarse graining and decoherence, introduced recently by Gell-Mann and Hartle for quantum cosmology, have been reformulated in usual terms of the formal von Neumann measurement theory. The formalism of continuous measurement has shown to be equivalent to coarse graining, with the soft version of decoserence.

Original languageEnglish
Pages (from-to)71-74
Number of pages4
JournalPhysics Letters B
Issue number1-2
Publication statusPublished - Apr 23 1992

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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