Local ab initio Schemes to Include Corre
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M. Albrecht; P. Fulde
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Article
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2002
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John Wiley and Sons
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English
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Dedicated to Professor Dr. Roland Zimmermann on the occasion of his 60th birthday Two basic methods to assess correlation effects on an ab initio level for excited states in semiconductors and insulators are presented. The construction of an effective Hamiltonian and a Green's function approach are