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Models of particle detection in regions of space-time

Models of particle detection in regions of space-time We investigate two models of measuring devices designed to detect a nonrelativistic free particle in a given region of space-time. These models predict different probabilities for a free quantum particle to enter a space-time region R ; therefore, this notion is device dependent. The first model is of a von Neumann coupling, which we present as a contrast to the second model. The second model is shown to be related to probabilites defined through partitions of configuration-space paths in a path integral. This study thus provides insight into the physical situations to which such definitions of probabilities are appropriate. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review A American Physical Society (APS)

Models of particle detection in regions of space-time

Physical Review A , Volume 50 (2) – Aug 1, 1994
8 pages

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References (14)

Publisher
American Physical Society (APS)
Copyright
Copyright © 1994 The American Physical Society
ISSN
1094-1622
DOI
10.1103/PhysRevA.50.939
Publisher site
See Article on Publisher Site

Abstract

We investigate two models of measuring devices designed to detect a nonrelativistic free particle in a given region of space-time. These models predict different probabilities for a free quantum particle to enter a space-time region R ; therefore, this notion is device dependent. The first model is of a von Neumann coupling, which we present as a contrast to the second model. The second model is shown to be related to probabilites defined through partitions of configuration-space paths in a path integral. This study thus provides insight into the physical situations to which such definitions of probabilities are appropriate.

Journal

Physical Review AAmerican Physical Society (APS)

Published: Aug 1, 1994

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