Abstract

The recent development is reviewed of the time-dependent Newns-Anderson model to describe the nonadiabatic effects due to moving particles such as atoms and molecules on metal surfaces. A brief sketch of the historical background is given and the foundation of the model is discussed such as the trajectory approximation and the time-dependence of parameters. The charge exchange, effects of the intraatomic Coulomb interaction and the energy dissipation are discussed, and some remarks conclude the article.

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