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I Modeling the onset of decoherence in a subspace as a transition from this subspace

  1. Mar 28, 2016 #1
    Modelling the onset of decoherence in a subspace as a transition from this subspace



    http://www.ba.infn.it/~pascazio/publications/sudarshan_seven_quests.pdf
    (Section 10 is relevant)

    I am currently reading papers discussing the Zeno Effect. The linked paper discusses modelling a transition out of a wanted subspace as the onset of decoherence. Thus by frequently projecting back onto the subspace prevents decoherence. I don't quite understand this model. Why does remaining in the subspace mean that coherence must be preserved? Surely environmental effects can decohere the system even if it stays in the subspace. I guess that's what I'm having trouble with, why decoherence is modeled as a transition out of the subspace.
     
    Last edited: Mar 28, 2016
  2. jcsd
  3. Apr 2, 2016 #2
    Thanks for the post! This is an automated courtesy bump. Sorry you aren't generating responses at the moment. Do you have any further information, come to any new conclusions or is it possible to reword the post?
     
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