Models with infinitely many absorbing states analitically soluble / Modelos com infinitos estados absorventes analiticamente solúveis

AUTOR(ES)

Evandro Freire da Silva

DATA DE PUBLICAÇÃO

2005

RESUMO

In this work we studied some models with particle conservation which present a phase transition between an active stationary state and infinitely many absorbing states. The active states of each model consist of equiprobable configurations, corresponding, according to Gibbs s formulation of Statistical Mechanics, to a microcanonical ensemble. Carrying out an ensemble change, we can calculate the physical quantities for each one of these models using the transfer matrix technique, explained in this work. We performed simulations of these models and confirmed the hypothesis that sustain the use of this technique. Finally, we analysed two models derived from the previous ones for which this technique cannot be applied.

ASSUNTO(S)

ensembles matriz de transferencia lattice models phase transitions mudancas de fase ensemble modelos em reticulados transfer matrix

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