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Bosonization of dimerized Hubbard chains
Author(s) -
Mocanu C.,
Dzierzawa M.,
Schwab P.,
Eckern U.
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.200460041
Subject(s) - bosonization , majorana , hubbard model , fermion , hamiltonian (control theory) , limit (mathematics) , majorana fermion , physics , chain (unit) , mathematical physics , quantum mechanics , mathematics , superconductivity , mathematical analysis , mathematical optimization
The role of Klein factors is investigated for the bosonized Hamiltonian of the dimerized Hubbard model. Contrary to previous approaches we take into account their number changing property, i.e. we do not replace them by Majorana fermions. We show how to treat Klein factors in the framework of the self‐consistent harmonic approximation, both for finite systems and in the thermodynamic limit. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)