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Non-Adiabatic Transition in Spin-Boson Model and Generalization of the Landau-Zener Formula

Non-adiabatic transitions are studied in a spin-boson model with multiple scattering points. In order to generalize the Landau-Zener formula, which describes the case of a single scattering point, we define an ``effective gap'' for a set of scattering points. The generalized formula agrees very well with numerical results of the non-adiabatic dynamics, which we obtained by a direct numerical method. This will make the Landau-Zener formula yet more useful in analyzing experimental data of magnetic-moment inversion.

preprint1998arXivOpen access
Hiroto KobayashiNaomichi HatanoSeiji Miyashita
cond-mat.stat-mech
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Open access3 authors1 topic
Imported metadata coverageMissing code, dataset, citation and institution fields are tracked without dominating the paper.Details
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Hiroto KobayashiNaomichi HatanoSeiji Miyashita

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