10 citations · 19 across the 6 of their papers we have counts for
6 papers
Individual-based model for coevolving competing populations
I. C. Charret, J. N. C. Louzada, A. T. Costa
Classical models for competition between two species usually predict exclusion or divergent evolution of resource exploitation. However, recent experimental data show that coexiste…
Spontaneous emergence of spatial patterns ina a predator-prey model
I. C. Charret, M. V. Carneiro
We present studies for an individual based model of three interacting populations whose individuals are mobile in a 2D-lattice. We focus on the pattern formation in the spatial dis…
Analytical Results of the One-Dimensional Hubbard Model in the High Temperature Limit
I. C. Charret, E. V. Correa Silva, S. M. de Souza +3
We investigate the grand potential of the one-dimensional Hubbard model in the high temperature limit, calculating the coefficients of the high temperature expansion (-expansion…
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…
Analytical Results for the Grand-Canonical Partition Function for Unidimensional Hubbard Model up to Order
I. C. Charret, E. V. Correa Silva, S. M. de Souza +1
We calculate the exact analytical coefficients of the expansion of the grand-canonical partition function of the unidimensional Hubbard model up to order , using an altern…
Grand Canonical Partition Function for Unidimensional Systems: Application to Hubbard Model up to Order beta^3
I. C. Charret, S. M. de Souza, M. T. Thomaz +1
We exploit the grassmannian nature of the variables involved in the path integral expression of the grand canonical partition function for self--interacting fermionic models to sho…