CHAOS IN THE RANDOM-FIELD ISING-MODEL

Authors
ALAVA M RIEGER H
Citation
M. Alava et H. Rieger, CHAOS IN THE RANDOM-FIELD ISING-MODEL, Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics, 58(4), 1998, pp. 4284-4287
Citations number
23
Categorie Soggetti
Physycs, Mathematical","Phsycs, Fluid & Plasmas
Journal title
Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics → ACNP
ISSN journal
1063651X
Volume
58
Issue
4
Year of publication
1998
Pages
4284 - 4287
Database
ISI
SICI code
1063-651X(1998)58:4<4284:CITRI>2.0.ZU;2-I
Abstract
The sensitivity of the random field Ising model to small random pertur bations of the quenched disorder is studied via exact ground states ob tained with a maximum-flow algorithm. In one and two space dimensions we find a mild form of chaos, meaning that the overlap of the old, unp erturbed ground state and the new one is smaller than 1, but extensive . In three dimensions the rearrangements are marginal (concentrated in the well defined domain walls). Implications for finite temperature v ariations and experiments are discussed. [S1063-651X(98)06710-5].