Tunneling time (τt ), in its real and imaginary parts, can be deduced from measurements of decay time (τd ) in Josephson junctions. It turns out that the real part of τt is much shorter than the imaginary one, which can be identified with the semiclassical time. A third quantity is the Zeno-time (τZ) which, in turn, can be estimated from the previous ones, since it is approximately given by their geometrical mean. The possibility of observing the Zeno-effect is then discussed.
Characteristic time-scales for macroscopic quantum tunneling / A. Ranfagni; I. Cacciari; P. Sandri; C. Ranfagni; R. Ruggeri; A. Agresti. - In: PHYSICS LETTERS A. - ISSN 0375-9601. - ELETTRONICO. - 343:(2005), pp. 469-473. [10.1016/j.physleta.2005.06.039]
Characteristic time-scales for macroscopic quantum tunneling
AGRESTI, ALESSANDRO
2005
Abstract
Tunneling time (τt ), in its real and imaginary parts, can be deduced from measurements of decay time (τd ) in Josephson junctions. It turns out that the real part of τt is much shorter than the imaginary one, which can be identified with the semiclassical time. A third quantity is the Zeno-time (τZ) which, in turn, can be estimated from the previous ones, since it is approximately given by their geometrical mean. The possibility of observing the Zeno-effect is then discussed.File | Dimensione | Formato | |
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