Balachandran, A. P. ; Roy, S. M. (2000) Quantum anti-zeno paradox Physical Review Letters, 84 (18). pp. 4019-4022. ISSN 0031-9007
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Official URL: http://link.aps.org/doi/10.1103/PhysRevLett.84.401...
Related URL: http://dx.doi.org/10.1103/PhysRevLett.84.4019
Abstract
We establish an exact differential equation for the operator describing time-dependent measurements continuous in time and obtain a series solution. Suppose the projection operator E(t)=U(t)EU†(t) is measured continuously from t=0 to T, where E is a projector leaving the initial state unchanged and U(t) a unitary operator obeying U(0)=1. We prove that the probability of always finding E(t)=1 from t=0 to T is unity. If U(t)≠1, the watched kettle is sure to "boil."
| Item Type: | Article |
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| Source: | Copyright of this article belongs to The American Physical Society. |
| ID Code: | 42840 |
| Deposited On: | 07 Jun 2011 04:36 |
| Last Modified: | 18 May 2016 00:00 |
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