Indexed on: 13 Jun '09Published on: 13 Jun '09Published in: Physical review. E, Statistical, nonlinear, and soft matter physics
We consider the switching rate of a metastable reaction scheme, which includes reactions with arbitrary steps, e.g., kA<-->(k+r)A (both forward and reverse reaction steps are allowed to happen). Employing a WKB approximation, controlled by a large system size, we evaluate both the exponent and the preexponential factor for the rate. The results are illustrated on a number of examples.