41 citations · 138 across the 26 of their papers we have counts for
26 papers
The -expansion of the fermionic spinless Hubbard model off the half-filling regime
E. V. Corrêa Silva, M. T. Thomaz, O. Rojas
We found that when the spinless model is off the half-filling regime (), the Helmholtz free energy (HFE) can be written as two -expansions: one expansion comes from the…
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…
Contribution of the basis-dependent adiabatic geometric phase to noncyclic evolution
M. T. Thomaz
The geometric phase acquired by the vector states under an adiabatic evolution along a noncyclic path can be calculated correctly in any instantaneous basis of a Hamiltonian that v…
On the particle-hole symmetry of the fermionic spinless Hubbard model in
M. T. Thomaz, E. V. Corrêa Silva, O. Rojas
We revisit the particle-hole symmetry of the one-dimensional () fermionic spinless Hubbard model, associating that symmetry to the invariance of the Helmholtz free energy of t…
The magnetization plateaus of the ferro and anti-ferro spin-1 classical models with term
S. M. de Souza, M. T. Thomaz
We study in detail the exact thermodynamics of the one-dimensional standard and staggered spin-1 Ising models with a single-ion anisotropy term in the presence of a longitudinal ma…
The high-temperature expansion of the classical Ising model with S_z^2 term
M. T. Thomaz, O. Rojas
We derive the high-temperature expansion of the Helmholtz free energy up to the order β^{17} of the one-dimensional spin-S Ising model, with single-ion anisotropy term, in the pres…