Griffiths-McCoy singularities in the transverse field Ising model on the randomly diluted square lattice
Disordered Systems and Neural Networks
2009-10-31 v1 Statistical Mechanics
Abstract
The site-diluted transverse field Ising model in two dimensions is studied with Quantum-Monte-Carlo simulations. Its phase diagram is determined in the transverse field (Gamma) and temperature (T) plane for various (fixed) concentrations (p). The nature of the quantum Griffiths phase at zero temperature is investigated by calculating the distribution of the local zero-frequency susceptibility. It is pointed out that the nature of the Griffiths phase is different for small and large Gamma.
Keywords
Cite
@article{arxiv.cond-mat/9803270,
title = {Griffiths-McCoy singularities in the transverse field Ising model on the randomly diluted square lattice},
author = {T. Ikegami and S. Miyashita and H. Rieger},
journal= {arXiv preprint arXiv:cond-mat/9803270},
year = {2009}
}
Comments
21 LaTeX (JPSJ macros included), 12 eps-figures included