SciELO - Scientific Electronic Library Online

 
vol.52 suppl.3Dinámica de osciladores acoplados por radiaciónModeling the dynamics of liquid drops with SPH author indexsubject indexsearch form
Home Pagealphabetic serial listing  

Services on Demand

Journal

Article

Indicators

Related links

  • Have no similar articlesSimilars in SciELO

Share


Revista mexicana de física

Print version ISSN 0035-001X

Abstract

BUENDIA, G.M; RIKVOLD, P.A; PARK, K  and  NOVOTNY, M.A. Metastable lifetime of a kinetic Ising model with a transition dynamic algorithm. Rev. mex. fis. [online]. 2006, vol.52, suppl.3, pp.35-37. ISSN 0035-001X.

We calculate the average lifetime of the metastable state of a 2-d kinetic Ising model. The model evolves under what is called a transition dynamic (TDA), which assumes that the system in going from an initial to a final state, must pass through an intermediate state t, such that the transition rate has the form, W ( i j) = W ( i t) W ( t j). The results are obtained in two different ways. First, by calculating the first-passage time from the metastable to an absorbing state. Second, by the technique of absorbing Markov chains. Our calculations reproduce the standard result obtained in the low-temperature nucleation regime, = . However, we find that A and Γ differ from the values calculated for the standard Glauber dynamics. These results are consistent with recent studies which indicate that, contrary to common belief, Γ is not simply the metastable energy barrier, but depends on the stochastic dynamics used.

Keywords : Metastable; nucleation; Kinetic Ising model.

        · abstract in Spanish     · text in English     · English ( pdf )

 

Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License