Published 2008
| Version v1
Journal article
Bath-symmetries and hybridization sum-rules for CDMFT and DCA
- 1. Institut fuer Festkoerperforschung, Forschungszentrum Juelich (Germany)
- 2. Max-Planck-Institut fuer Festkoerperforschung, Stuttgart (Germany)
Description
In the Hamiltonian formulation of CDMFT and DCA, the point symmetries of the cluster imply symmetries of the hybridization, which can substantially reduce the number of independent parameters to fit the bath Green function. We review these symmetries and derive general sum-rules for the hybridizations, which allow to check the quality of a fit using a finite set of bath sites and imply what hybridizations vanish. As examples we discuss calculations for the Hubbard model in one-dimension and for 2 x 2 clusters
Availability note (English)
Also available online: http://www.dpg-tagungen.de/index_en.htmlAdditional details
Identifiers
Publishing Information
- Journal Title
- Verhandlungen der Deutschen Physikalischen Gesellschaft
- Journal Volume
- 43
- Journal Issue
- 1
- Journal Page Range
- [1 p.]
- ISSN
- 0420-0195
- CODEN
- VDPEAZ
Conference
- Title
- Physics Education, History of Physics, Radiation and Medical Physics as well as the Working Groups Equal Opportunities, Industry and Business, Information, Physics and Disarmament, Physics of Socio-economic Systems, Young DPG
- Original Conference Title
- 72. Jahrestagung und DPG (Deutsche Physikalische Gesellschaft e.V.) Fruehjahrstagung der Sektion Kondensierte Materie und den Fachverbaenden: Didaktik der Physik, Geschichte der Physik, Strahlen- und Medizinphysik und den Arbeitskreisen Chancengleichheit, Industrie und Wirtschaft, Information, Physik und Abruestung, Physik Sozio-oekonomischer Systeme, Junge DPG
- Acronym
- 72. annual meeting and DPG (Deutsche Physikalische Gesellschaft e.V.) Spring meeting of the Condensed Matter Section and the Divisions
- Dates
- 25-29 Feb 2008
- Place
- Berlin (Germany)
INIS
- Country of Publication
- Germany
- Country of Input or Organization
- Germany
- INIS RN
- 40090161
- Subject category
- S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- GREEN FUNCTION; HAMILTONIANS; HUBBARD MODEL; HYBRIDIZATION; MEAN-FIELD THEORY; ONE-DIMENSIONAL CALCULATIONS; QUANTUM MECHANICS; SUM RULES; SYMMETRY
- Descriptors DEC
- CRYSTAL MODELS; EQUATIONS; FUNCTIONS; MATHEMATICAL MODELS; MATHEMATICAL OPERATORS; MECHANICS; QUANTUM OPERATORS
Optional Information
- Notes
- Session: TT 23.2 Mi 14:15; No further information available