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Quantum Anti-Zeno Effect in Nuclear β Decay
The acceleration of decay induced by frequency measurements, namely the quantum anti-Zeno effect (AZE), was first predicted by Kofman and Kurizki [Nature 405 (2000) 546]. The effect of the frequency measurements on nuclear β decay rate is analyzed based on the time-dependent perturbation theory. We...
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| Published in: | Chinese physics letters 2021-03, Vol.38 (3), p.32301-38 |
|---|---|
| Main Authors: | , |
| Format: | Article |
| Language: | English |
| Citations: | Items that this one cites Items that cite this one |
| Online Access: | Get full text |
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| Summary: | The acceleration of decay induced by frequency measurements, namely the quantum anti-Zeno effect (AZE), was first predicted by Kofman and Kurizki [Nature 405 (2000) 546]. The effect of the frequency measurements on nuclear
β
decay rate is analyzed based on the time-dependent perturbation theory. We present a detailed calculation of the decay rates of
3
H,
60
Co (
β
−
type),
22
Na,
106
Ag (
β
+
type) and
18
F,
57
Co and
111
Sn (EC type) under frequency measurements. It is found that the effects of frequency measurements on the decay rates of
β
+
and
β
−
cases are different from the case of EC, and the smaller the
β
decay energy is, the more favorable it is to observe the AZE in experiment. Based on our analysis, it is suggested that possible experimental candidates should have a small decay energy and a reasonable half life (such as
3
H) for observing the AZE in
β
decay. |
|---|---|
| ISSN: | 0256-307X 1741-3540 |
| DOI: | 10.1088/0256-307X/38/3/032301 |