Navegação Ciências Exatas e da Terra por Autor "Fontanari, Jose Fernando"

Resultados 1-2 de 2

    • Effects of trilinear symmetry breaking on the Potts-model transition of uniaxially stressed SrTiO 3 

      Fontanari, Jose Fernando; Theumann, Walter Karl (1986) [Artigo de periódico]
      A Landau analysis shows that a break of trilinear symmetry in the continuous three-state Potts model with linear and quadratic symmetry breaking is re1evant for the trigonal-to-pseudotetragonal phase transition in uniaxially ...

    • Potts model in a random field 

      Fontanari, Jose Fernando; Theumann, Walter Karl; Dominguez, David Renato Carreta (1989) [Artigo de periódico]
      The q-state Potts model in a random field with a discrete distribution of statistically independent fields ordered along any of the q states is studied in mean-field theory. Detailed phase diagrams are obtained in a ...