SCALING OF THE RANDOM-FIELD ISING-MODEL AT ZERO-TEMPERATURE

Authors
SWIFT MR BRAY AJ MARITAN A CIEPLAK M BANAVAR JR
Citation
Mr. Swift et al., SCALING OF THE RANDOM-FIELD ISING-MODEL AT ZERO-TEMPERATURE, Europhysics letters, 38(4), 1997, pp. 273-278
Citations number
49
Categorie Soggetti
Physics
Journal title
Europhysics letters → ACNP
ISSN journal
02955075
Volume
38
Issue
4
Year of publication
1997
Pages
273 - 278
Database
ISI
SICI code
0295-5075(1997)38:4<273:SOTRIA>2.0.ZU;2-1
Abstract
The exact determination of ground states of small systems is used in a scaling study of the random-field Ising model. While three variants o f the model are found to be in the same universality class in 3 dimens ions, the Gaussian and bimodal models behave distinctly in 4 dimension s with the latter apparently having a discontinuous jump in the magnet ization. A finite-size scaling analysis is presented for this transiti on.