dorsal/arxiv
View SchemaQuantum Zeno Effect for Exponentially Decaying Systems
| Authors | Kazuki Koshino, Akira Shimizu |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0307075 |
| URL | https://arxiv.org/abs/quant-ph/0307075 |
| DOI | 10.1103/PhysRevLett.92.030401 |
| Journal | Phys. Rev. Lett. 92 030401 (2004) |
Abstract
The quantum Zeno effect -- suppression of decay by frequent measurements -- was believed to occur only when the response of the detector is so quick that the initial tiny deviation from the exponential decay law is detectable. However, we show that it can occur even for exactly exponentially decaying systems, for which this condition is never satisfied, by considering a realistic case where the detector has a finite energy band of detection. The conventional theories correspond to the limit of an infinite bandwidth. This implies that the Zeno effect occurs more widely than expected so far.
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"abstract": "The quantum Zeno effect -- suppression of decay by frequent measurements --\nwas believed to occur only when the response of the detector is so quick that\nthe initial tiny deviation from the exponential decay law is detectable.\nHowever, we show that it can occur even for exactly exponentially decaying\nsystems, for which this condition is never satisfied, by considering a\nrealistic case where the detector has a finite energy band of detection. The\nconventional theories correspond to the limit of an infinite bandwidth. This\nimplies that the Zeno effect occurs more widely than expected so far.",
"arxiv_id": "quant-ph/0307075",
"authors": [
"Kazuki Koshino",
"Akira Shimizu"
],
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"quant-ph"
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"doi": "10.1103/PhysRevLett.92.030401",
"journal_ref": "Phys. Rev. Lett. 92 030401 (2004)",
"title": "Quantum Zeno Effect for Exponentially Decaying Systems",
"url": "https://arxiv.org/abs/quant-ph/0307075"
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