Phys. Rev. A 45, 1230–1237 (1992)Kink dynamics and kink-pair nucleation in the discrete Frenkel-Kontorova modelReceived 22 July 1991; published in the issue dated January 1992 Statistical dynamical properties of the Frenkel-Kontorova model in an external field are studied with main emphasis put on kink-pair nucleation and kink movement at low temperatures. Our method of constraint(s) together with the transition state theory make it possible to determine the N-dimensional saddle-point configuration and to obtain velocity for kink movement, rate for kink-pair nucleation, and consequently velocity for chain propagation. Generalization of the method used in this paper is also presented. © 1992 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.45.1230
DOI:
10.1103/PhysRevA.45.1230
PACS:
03.20.+i, 03.40.Kf
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