REENTRANCE PHENOMENA IN A BISTABLE KINETIC-MODEL DRIVEN BY CORRELATEDNOISE

In this Letter we discuss a bistable model driven by two white noise s ources, when the correlation time of the correlations between two sour ces tau is nonzero. We find that there is a critical value of the corr elation time tau(c). For tau > tau(c), the system undergoes a successi on of two phase transitions (namely, the reentrance phenomenon) as the strength of the correlations between two noise sources lambda is vari ed. However, for tau < tau(c), the system undergoes a (single) phase t ransition as lambda is varied.