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cond-mat.stat-mech2015★ 4 cited
Comparison of the ferromagnetic Blume-Emery-Griffiths model and the AF spin-1 longitudinal Ising model at low temperature
M. T. Thomaz, E. V. Corrêa Silva
We derive the exact Helmholtz free energy (HFE) of the standard and staggered one-dimensional Blume-Emery-Griffiths (BEG) model in the presence of an external longitudinal magnetic…
cond-mat.stat-mech1998★ 3 cited
Grassmann Algebra and Fermions at Finite Temperature
I. C. Charret, E. V. Corrêa Silva, S. M. de Souza +2
For any d-dimensional self-interacting fermionic model, all coefficients in the high-temperature expansion of its grand canonical partition function can be put in terms of multivar…