Character of Dissipation in Large Amplitude Collective Nuclear Motion
نویسنده
چکیده
Within the Feynman Vernon path integral formalism and in the Markovian limit we consider the time evolution of a collective subsystem coupled to a bath of intrinsic degrees of freedom We show that dissipation leads to major qualitative and quantitative modi cations of the time evolution of the density matrix of the collective subsystem In either the spatial momentumor energy representation the density distribution acquires very long tails and in particular tunneling is greatly enhanced
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