1997/05/23 by I. C. Charret, Charret, I. C., E. V. Correa Silva +5
Mathematics · Physics and Astronomy · #Advanced Algebra and Geometry #Algebraic structures and combinatorial models #FOS: Physical sciences #Nonlinear Waves and Solitons #Statistical Mechanics (cond-mat.stat-mech) #Strongly Correlated Electrons (cond-mat.str-el) #cond-mat.stat-mech #cond-mat.str-el
paper · pdf · doi:10.48550/arxiv.cond-mat/9705241
Plin TeX, 30 pages, 7 Encapsulated PostScript figures (uses epsf and rotate)
arxiv created 1997/05/23 · openalex publication_date 1997/05/23 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We calculate the exact analytical coefficients of the β expansion of the grand-canonical partition function of the unidimensional Hubbard model up to order β5, using an alternative method, based on properties of the Grassmann algebra. The results derived are non-perturbative and no restrictions on the set of parameters that characterize the model are required. By applying this method we obtain analytical results for the thermodynamical quantities, in the high-temeprature limit, for arbitrary density of electrons in the unidimensional chain.