%0 Journal Article
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%@issn 0921-4534
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%@usergroup marciana
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%3 thermodynamics infinite.pdf
%B Physica C: Superconductivity and Its Applications
%X The infinite U Hubbard model, with exclusion of double occupancy of sites, can be considered as a free orthofermion Hamiltonian which is exactly soluble. It is found that the orthofermion distribution function is similar to the mean number of trapped electrons in an impurity in a semiconductor where the double occupancy of the impurity is forbidden and to the distribution function of the usual fermions with the chemical potential  replaced by . In one dimension, the thermodynamics of free orthofermion gives the known exact results of the infinite U Hubbard model. Thus it shows that at least in one dimension the fermions with exclusion of double occupancy of sites behave as free orthofermions. Since free orthofermions Hamiltonian is exactly soluble in any dimension, it can be employed to ascertain the accuracy of the approximate solutions of the Hubbard model, frequently used for the strongly correlated electron systems like high temperature superconductors.
%8 Aug.
%T Thermodynamics of infinite U Hubbard model
%@secondarytype PRE PI
%K SENSORS AND MATERIALS, Hubbard model, Strongly correlated electron systems, Orthofermions, SENSORES E MATERIAIS, Modelo Hubbard, Sistema elétron.
%@visibility shown
%@group LAS-INPE-MCT-BR
%@secondarykey INPE-11819-PRE/7172
%@copyholder SID/SCD
%2 sid.inpe.br/marciana/2004/12.13.16.12.11
%@affiliation Instituto Nacional de Pesquisas Espaciais, Laboratório Associado de Sensores e Materiais (INPE.LAS)
%@affiliation Institute of Mathematical Sciences, CIT Campus,
%@project MATCON: Física da matéria condensada
%P 277-278
%4 sid.inpe.br/marciana/2004/12.13.16.12
%D 2004
%V 408-410
%A Kishore, Ram,
%A Mishra, A. K.,
%@dissemination WEBSCI; PORTALCAPES.
%@area FISMAT