dorsal/arxiv
View SchemaDeviations from exponential law and Van Hove's "\lambda^2 t" limit
| Authors | P. Facchi, S. Pascazio |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/9904020 |
| URL | https://arxiv.org/abs/quant-ph/9904020 |
| DOI | 10.1016/S0378-4371(99)00209-5 |
| Journal | Physica A271 (1999) 133-146 |
Abstract
The deviations from a purely exponential behavior in a decay process are analyzed in relation to Van Hove's "\lambda^2 t" limiting procedure. Our attention is focused on the effects that arise when the coupling constant is small but nonvanishing. We first consider a simple model (two-level atom in interaction with the electromagnetic field), then gradually extend our analysis to a more general framework. We estimate all deviations from exponential behavior at leading orders in the coupling constant.
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"abstract": "The deviations from a purely exponential behavior in a decay process are\nanalyzed in relation to Van Hove\u0027s \"\\lambda^2 t\" limiting procedure. Our\nattention is focused on the effects that arise when the coupling constant is\nsmall but nonvanishing. We first consider a simple model (two-level atom in\ninteraction with the electromagnetic field), then gradually extend our analysis\nto a more general framework. We estimate all deviations from exponential\nbehavior at leading orders in the coupling constant.",
"arxiv_id": "quant-ph/9904020",
"authors": [
"P. Facchi",
"S. Pascazio"
],
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"doi": "10.1016/S0378-4371(99)00209-5",
"journal_ref": "Physica A271 (1999) 133-146",
"title": "Deviations from exponential law and Van Hove\u0027s \"\\lambda^2 t\" limit",
"url": "https://arxiv.org/abs/quant-ph/9904020"
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