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Towards a solution of the consistent t‐matrix approximation for the U → ∞ Anderson impurity model
Author(s) -
Keiter Hellmut,
Baumgartner Klaus
Publication year - 2005
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200460039
Subject(s) - impurity , anderson impurity model , matrix (chemical analysis) , physics , mathematics , variable (mathematics) , mathematical physics , mathematical analysis , materials science , quantum mechanics , composite material
The basic integral equations for the consistent t‐matrix approximation (CTMA) of the infinite U Anderson model are formally solved within the slow variable approximation. The solution is compared with a numerical C++ analysis using self adapting nets. Very good agreement is found. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
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