Strong-coupling behaviour in discrete Kardar-Parisi-Zhang equations

Дата и время публикации : 1996-04-11T17:22:22Z

Авторы публикации и институты :
T. J. Newman
A. J. Bray

Ссылка на журнал-издание: J. Phys. A 29, 7917 (1996)
Коментарии к cтатье: 21 pages, revtex, 2 figures, submitted to J. Phys. A
Первичная категория: cond-mat

Все категории : cond-mat

Краткий обзор статьи: We present a systematic discretization scheme for the Kardar-Parisi-Zhang (KPZ) equation, which correctly captures the strong-coupling properties of the continuum model. In particular we show that the scheme contains no finite-time singularities in contrast to conventional schemes. The implications of these results to i) previous numerical integration of the KPZ equation, and ii) the non-trivial diversity of universality classes for discrete models of `KPZ-type’ are examined. The new scheme makes the strong-coupling physics of the KPZ equation more transparent than the original continuum version and allows the possibility of building new continuum models which may be easier to analyse in the strong-coupling regime.

Category: Physics