Neuartige Ansätze zur Behandlung des elektronischen Vielteilchenproblems in kondensierter Materie
Neuartige Ansätze zur Behandlung des elektronischen Vielteilchenproblems in kondensierter Materie
The investigation of the properties of an interacting many-particle system isone of the key problems in modern solid state physics.In the first part of this work, a recently developed method for the descriptionof correlated electrons beyond the local density approximation is studied.The application...
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Personal Name(s): | Biermann, Silke (Corresponding author) |
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Contributing Institute: |
Publikationen vor 2000; PRE-2000; Retrocat |
Imprint: |
Jülich
Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag
2001
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Physical Description: |
III, 129 p. |
Document Type: |
Report Book |
Research Program: |
Addenda |
Series Title: |
Berichte des Forschungszentrums Jülich
3899 |
Link: |
OpenAccess OpenAccess |
Publikationsportal JuSER |
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520 | |a The investigation of the properties of an interacting many-particle system isone of the key problems in modern solid state physics.In the first part of this work, a recently developed method for the descriptionof correlated electrons beyond the local density approximation is studied.The application to the $\textit{fcc}$-phase of Manganese ($\gamma$-Mn) shows that this material can be considered as a strongly correlated metal. This statement is inagreement with recent photoemission data.In the second part, the possibility of describing many-particle systemsby means of supersymmetric methods is investigated. A representation ofthe time evolution operator of an interacting many-particle system is derivedas a functional integral over supervectors. We discuss similarities to anddifferences from familiar functional integral representations as well as problemsthat hamper further developments of the theory. | ||
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