Statics and dynamics of a one-dimensional quantum many-body system
arXiv:cond-mat/9911003
Abstract
The macroscopic zero-temperature behavior of weakly- incommensurate systems in one dimension is described in terms of solitons. The soliton density n obeys equations displaying several types of singular interface-like solutions: (i) equilibrium or moving boundary between the n = 0 and finite n regions, and (ii) stationary or moving annihilation front separating solitons from antisolitons.
4 pages, 1 figure