Effect of electron-phonon interaction and external magnetic field on the bound state in the Anderson-Holstein model: an improved variational treatment
作者： Ch. Narasimha Raju , Ashok Chatterjee
DOI: 10.1140/EPJB/E2015-50528-5
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摘要: The single-impurity Anderson-Holstein model is investigated in the presence of a magnetic field by an improved variational method. phonon degrees freedom are first eliminated modified Lang-Firsov transformation followed zero-phonon averaging. resulting Hamiltonian then treated cluster method to study effects electron-phonon interaction and on ground state energy, local moment binding energy between impurity conduction electrons.
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