title: Kinks of arbitrary width.
abstract: The influence of external potentials on kink width is investigated. The stability of a single kink and kink-antikink solutions in the presence of an external force is proved. The consequences of stability for defect production during a quench are discussed.
authors.affiliation: Institute of Physics AP, Podchorazych 2, 30-084 Cracow, Poland.
authors.forename: T
authors.initials: T
authors.lastname: Dobrowolski