Before revision:  We propose a dynamic transition, which has potential application in understanding non-equilibrium processes such as transcription and replication of DNA, unfolding of proteins and RNA etc. Here, we demonstrate that without changing the physiological condition, a DNA may be brought to a new dynamic state from the zipped or unzipped state by varying the frequency of the applied force.
After revision:  We propose a dynamical transition, where without changing the physiological condition, a DNA may be brought to a new dynamic state from the zipped or unzipped state by varying the frequency of the applied force.