Functional Integral Approach for an Exte
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B. Albani; F. Goedsche; G. Heber; G. Röpke
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Article
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1972
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John Wiley and Sons
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English
⚖ 586 KB
## Abstract The behaviour of two neighbouring magnetic centres imbedded in an effective energy band is studied with the aid of the functional integral formalism. The model includes the parts of intra‐atomic and inter‐atomic Coulomb interaction which can be written in terms of occupation number oper