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2012 | 10 | 2 | 282-319
Article title

Time-delay of classical and quantum scattering processes: a conceptual overview and a general definition

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Abstracts
EN
We present a step by step introduction to the notion of time-delay in classical and quantum mechanics, with the aim of clarifying its foundation at a conceptual level. In doing so, we motivate the introduction of the concepts of “fuzzy” and “free-flight” sojourn times that we use to provide the most general possible definition for the quantum time-delay, valid for simple and multichannel scattering systems, with or without conditions on the observation of the scattering particle, and for incoming wave packets whose energy can be smeared out or sharply peaked (fixed energy). We conclude our conceptual analysis by presenting what we think is the right interpretation of the concepts of sojourn and delay times in quantum mechanics, explaining why, in ultimate analysis, they should not be called “times.”
Publisher

Journal
Year
Volume
10
Issue
2
Pages
282-319
Physical description
Dates
published
1 - 4 - 2012
online
31 - 3 - 2012
Contributors
References
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Document Type
Publication order reference
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YADDA identifier
bwmeta1.element.-psjd-doi-10_2478_s11534-011-0105-5
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