Physical Review A, 43, 5296-5306 (1991).
We study the crossover in the relaxation dynamics from the situation at the bifurcation point of a subcritical pitchfork bifurcation to a situation well above the bifurcation point. An approximation for the stochastic paths is given which allows the calculation of the statistical propertites of the escape times. These properties can be described by a generating function which exhibits dynamical scaling of critical nature at the bifurcation point and Gaussian dynamical scaling well above the bifurcation point.
Pere Colet e-mail: [email protected] http://www.imedea.uib.es/~pere/