Browsing by Subject "Transição de fase"

Now showing items 1-5 of 5

  • Estudo da Supercondutividade Exótica: sistemas de multibandas 

    Unknown author | Posted on: 01 jun. 2010
    Multi-band systems such as inter-metallic and heavy fermion compounds have quase-particles arising from different orbitals at their Fermi surface. Since these quase-particles have di®erent masses or densities, there is a ...

  • Estudo de propriedades críticas para modelos de rede com estados absorventes 

    Unknown author
    In this work we study the phase transitions between an absorbing and an active state in markovian lattice models. We investigate two different categories of these models: with conserved number of particles and with fluctuating ...

  • Propagação de frentes em meios heterogêneos 

    Unknown author | Posted on: 01 jan. 2011
    We develop a study about one-dimensional propagation of fronts, with calculation of roughness, correlation length, etc.. In our model, the minimum value of a combination between the second and fourth derivative of the front ...

  • Recobrimentos no espaço hiperbólico e percolação na árvore binária estendida 

    Unknown author | Posted on: 01 jan. 2011
    We study the percolation problem on the enhanced binary tree, a simple structure that exhibits geometric features of hyperbolic spaces: a non-vanishing surface-volume ratio, the latter being compact. The violation of Euclid ...

  • Transição de fase na matéria nuclear assimétrica 

    Unknown author
    In this work the thermodynamic properties of an asymmetric nuclear system with arbitrary proton fraction are studied. We employ a Skirme model in which surface and Coulombian effects are phenomenologically include to treat ...