Dissipative Landau-Zener Tunneling at Marginal Coupling

Simple item page
dc.creatorShytov, A. V.
dc.date2000-01-03
dc.date.accessioned2026-07-25T13:58:20Z
dc.descriptionThe Landau-Zener transition in a two level system can be suppressed or enhanced by coupling to an environment, depending on the temperature and the environment spectral function. We consider the marginal spectral function, when the dissipation effects are important for arbitrarily slow motion. Landau-Zener transition rate demonstrates a non-trivial dependence of the on the ``bias'', i. e. on the rate of the two energy levels relative motion. The Landau-Zener transition is fully suppressed for the values of the bias below a threshold bias set by the coupling strength. Above the threshold, the transition rate for zero temperature is found using the instanton method. At finite temperature, the Landau-Zener transition rate has a non-monotonic dependence on the coupling strength, being suppressed at the strong coupling.
dc.description5 pages, 2 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0001012
dc.identifierhttp://arxiv.org/abs/cond-mat/0001012
dc.identifier.urihttps://dspace.dare.co.zw/handle/123456789/21982
dc.subjectStatistical Mechanics
dc.subjectMesoscale and Nanoscale Physics
dc.titleDissipative Landau-Zener Tunneling at Marginal Coupling
dc.typetext

Files

Collections

arXiv