Watching it boil: Continuous observation for the quantum zeno effect View Full Text


Ontology type: schema:ScholarlyArticle      Open Access: True


Article Info

DATE

1997-12

AUTHORS

L. S. Schulman

ABSTRACT

The quantum Zeno effect (QZE) is often associated with the ironic maxim, “a watched pot never boils”, although the notion of “watching” suggests a continuous activity at odds with the usual (pulsed measurement) presentation of the QZE. We show how continuous watching can provide the same halting of decay as the usual QZE, and, for incomplete hindrance, we provide a precise connection between the interval between projections and the response time of the continuous observer. Thus, watching closely, but not so closely as to halt the “boiling”, is equivalent to—gives the same degree of partial hindrance as—pulsed measurements with a particular pulsing rate. Our demonstration is accomplished by treating the apparatus for the continuous watching as a fully quantum object. This in turn allows us a second perspective on the QZE, in which it is the modified level structure of the combined system/apparatus Hamiltonian that slows the decay. This and other considerations favor the characterization “dominated time evolution” for the QZE. More... »

PAGES

1623-1636

References to SciGraph publications

  • 1984-07. Consistent histories and the interpretation of quantum mechanics in JOURNAL OF STATISTICAL PHYSICS
  • Journal

    TITLE

    Foundations of Physics

    ISSUE

    12

    VOLUME

    27

    Author Affiliations

    Identifiers

    URI

    http://scigraph.springernature.com/pub.10.1007/bf02551441

    DOI

    http://dx.doi.org/10.1007/bf02551441

    DIMENSIONS

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