THE DYNAMICS OF CURVED FRONTS - BEYOND GEOMETRY

Authors
HAGBERG A MERON E
Citation
A. Hagberg et E. Meron, THE DYNAMICS OF CURVED FRONTS - BEYOND GEOMETRY, Physical review letters, 78(6), 1997, pp. 1166-1169
Citations number
25
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
78
Issue
6
Year of publication
1997
Pages
1166 - 1169
Database
ISI
SICI code
0031-9007(1997)78:6<1166:TDOCF->2.0.ZU;2-J
Abstract
We derive a new set of kinematic equations for front motion in two-dim ensional bistable media The equations generalize the geometric approac h by complementing the equation for the front curvature with an order parameter equation associated with a nonequilibrium Ising-Bloch bifurc ation. The resulting equations capture the core structure of spiral wa ves and spontaneous spiral-wave nucleation.