Skip to main content
Unpublished Paper
Ground States and Thermal States of the Random Field Ising Model
Physical Review Letters (2005)
  • Yong Wu
  • Jonathan Machta, University of Massachusetts Amherst
The random field Ising model is studied numerically at both zero and positive temperature. Ground states are mapped out in a region of random field and external field strength. Thermal states and thermodynamic properties are obtained for all temperatures using the Wang-Landau algorithm. The specific heat and susceptibility typically display sharp peaks in the critical region for large systems and strong disorder. These sharp peaks result from large domains flipping. For a given realization of disorder, ground states and thermal states near the critical line are found to be strongly correlated—a concrete manifestation of the zero temperature fixed point scenario.
Publication Date
Prepublished version downloaded from ArXiv. Published version is located at
Citation Information
Yong Wu and Jonathan Machta. "Ground States and Thermal States of the Random Field Ising Model" Physical Review Letters (2005)
Available at: