Landau Zener transitions in a dissipative environment: Numerically exact results

Details Landau Zener transitions in a dissipative environment: Numerically exact results Landau Zener transitions in a dissipative environment: Numerically exact results

2009-06-08

arxiv.org/abs/0906.1473v2

Phys.Rev.Lett.103:220401,2009

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 5 figures; published version (minor changes)

Scientific paper

10.1103/PhysRevLett.103.220401

We study Landau-Zener transitions in a dissipative environment by means of the numerically exact quasiadiabatic propagator path-integral. It allows to cover the full range of the involved parameters. We discover a nonmonotonic dependence of the transition probability on the sweep velocity which is explained in terms of a simple phenomenological model. This feature, not captured by perturbative approaches, results from a nontrivial competition between relaxation and the external sweep.

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