Directed polymer in random potential with an external driving force


Jin Min Kim (Soongsil Univ.)



We consider the directed polymer in random potential with an external driving force (or an attractive potential). The moving velocity v of the polymer is monitored as a function of the strength of the external field h. We find a relation between v and h on the creeping regime. The relation between our results and the domain wall movement in the ferroelectric material is discussed.