We consider walls connecting symmetric states in nonvariational one dimensional spatially extended systems. We show that the problem can be analyzed in terms of a free energy (nonequilibrium potential), which takes the same value in the asymptotic states (x → ±∞). The motion of the walls can be understood as a residual dynamics on an extended attractor in which the free energy takes a constant value.
|Number of pages||4|
|Journal||Physics Letters, Section A: General, Atomic and Solid State Physics|
|State||Published - 30 Sep 1996|
Bibliographical noteFunding Information:
This work was partially supported by Fondecyt (through projects 3940001 and 193-1008), CEE project CII-0006, and an ECOS project C93E08.