1,722 research outputs found
The Optimized Model of Multiple Invasion Percolation
We study the optimized version of the multiple invasion percolation model.
Some topological aspects as the behavior of the acceptance profile,
coordination number and vertex type abundance were investigated and compared to
those of the ordinary invasion. Our results indicate that the clusters show a
very high degree of connectivity, spoiling the usual nodes-links-blobs
geometrical picture.Comment: LaTeX file, 6 pages, 2 ps figure
Short-time critical dynamics of the Baxter-Wu model
We study the early time behavior of the Baxter-Wu model, an Ising model with
three-spin interactions on a triangular lattice. Our estimates for the dynamic
exponent are compatible with results recently obtained for two models which
belong to the same universality class of the Baxter-Wu model: the
two-dimensional four-state Potts model and the Ising model with three-spin
interactions in one direction. However, our estimates for the dynamic exponent
of the Baxter-Wu model are completely different from the values
obtained for those models. This discrepancy could be related to the absence of
a marginal operator in the Baxter-Wu model.Comment: 7 pages, 11 figures, accepted for publication in Phys. Rev.
Editorial
Continuamos em tempos de comemoração em nossa Revista. O Centro de Estudos e Pesquisas de Direito Sanitário — CEPEDISA acaba de completar seu vigésimo aniversário. O CEPEDISA nasceu da ambição de alguns professores, pesquisadores e profissionais das áreas da saúde e do direito em desenvolver e divulgar esse novo campo do conhecimento cientÃfico. Teve caráter internacional desde sua origem, pois sua primeira atividade foi a realização de um Seminário Internacional sobre o ensino do Direito Sanitário, que avaliou a experiência da Itália, dos Estados Unidos da América e da França no tratamento do tema
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