Titlebook: Resonances; The Unifying Route T Erkki Br?ndas,Nils Elander Conference proceedings 19891st edition Springer-Verlag Berlin Heidelberg 1989 m

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Time-dependent dynamics applied to electron transfer,ry to a two-level model, with the nuclei treated classically, are discussed in some detail as an illustration of the importance of choice of appropriate basis states and of how nuclear-electron coupling is accounted for. The need for an appropriate time-averaging scheme for the fast electron and nuc

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Semiclassical description of resonances, also for broad shape resonances in the vicinity or above potential barriers. The theory is extended to various Feshbach-type resonances in curve crossing systems. The results are in very good agreement wiht exact quantum computations when available.

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Irrepressible

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On the general inversion problem,trace of ..., and this operator in turn is given from a factorization of the scattering matrix into upper and lower triangular parts with respect to the direction ⊙. Finally we give some remarks on the so called miracle, which was introduced by R. G. Newton.

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Energy shifts and widths in atomic and molecular physics: Multichannel approach,der some conditions, be completely equivalent to the use of a complex integration path. When these conditions are not fulfilled, the energy suffers a complex shift which may be eliminated through analytic continuation.

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