INIFTA 05425
INSTITUTO DE INVESTIGACIONES FISICO-QUIMICAS TEORICAS Y APLICADAS
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Tricritical behaviour of Blume Capel model: a study of the Short-Time Dynamic evolution of the metastable phases in the coexistence region
Autor/es:
BAB, MARISA ALEJANDRA; WAGNER FIGUEIREDO
Lugar:
La Plata
Reunión:
Conferencia; Humboldt Kolleg-International Conference on Physics; 2011
Resumen:
We have studied the nonequilibrium dynamic evolution of the Blume Capel Model-S=1 in the coexistence region close to tricritical point. As is well known, the metastable phase becomes unstable at the spinodal point and presents divergences in the susceptibility and relaxation times. By assuming that this behaviour is analogous to that observed in continuous phase transitions, the spinodal lines were obtained from short-time dynamic evolution of the relevant physical observables, such as the order parameter and its second moment, which follow a power law within the short-time regime. We have shown that the obtained spinodal lines agree with the thermodynamical spinodals in mean field (long-ranged) systems. The results allowed us to determine the tricritical point as well as the tricritical exponents.
