Lifetime of macroscopic current states
Zaikin A. D., Panyukov S. V.
The determination of the rate Γ at which the current states decay in a Josephson junction should take into account the effect of quantum fluctuations on the "current-phase" dependence of such a junction. Analysis of the temperature dependence of Γ shows that Γ does not depend on the capacitance of the junction in the'strong-dissipation limit if the quantum correction to the current is taken into account. The results obtained in this study are in quantitative agreement with the results obtained experimentally by Schwartz et al, [Phys. Rev. Lett. 55, 1547 (1985)].
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![](/ps/1409/article_21414_800_head.png "The determination of the rate Γ at which the current states decay in a Josephson junction should take into account the effect of quantum fluctuations on the "current-phase" dependence of such a junction. Analysis of the temperature dependence of Γ shows that Γ does not depend on the capacitance of the junction in the'strong-dissipation limit if the quantum correction to the current is taken into account. The results obtained in this study are in quantitative agreement with the results obtained experimentally by Schwartz <i>et </i><i>al, </i>[Phys. Rev. Lett. 55, 1547 (1985)].")