We consider a resistively shunted Josephson junction with a resistance that depends inversely on voltage. It is shown that such a junction in the underdamped case can give rise to extremely long-lived metastable states even in the absence of external noise. We investigate numerically this metastable state and its transition to a chaotic state. The junction voltages corresponding to these states are studied.
G. Ambika, K Joseph, B., and Dr. V . M. Nandakumaran, “Metastable States and Irregular Behaviour in a Josephson Junction with Nonlinear Resistance”, Modern Physics Letters B, vol. 5, pp. 519–529, 1991.