Universality in three dimensional random-field ground states

Hartmann, Alexander K.; Nowak, Ulrich

Universality in three dimensional random-field ground states

Dateien

Hartmann_1999_Universality_Random_field.pdfGröße: 201.12 KBDownloads: 178

Datum

1999

Autor:innen

Hartmann, Alexander K.

Nowak, Ulrich

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

European Physical Journal / B. 1999, 7(1), pp. 105-109. Available under: doi: 10.1007/s100510050593

Zusammenfassung

We investigate the critical behavior of three-dimensional random-field Ising systems with both Gauss and bimodal distribution of random fields and additional the three dimensional diluted Ising antiferromagnet in an external field. These models are expected to be in the same universality class. We use exact ground-state calculations with an integer optimization algorithm and by a finite-size scaling analysis we calculate the critical exponents v, β, and γ. While the random-field model with Gauss distribution of random fields and the diluted antiferromagnet appear to be in same universality class, the critical exponents of the random-field model with bimodal distribution of random fields seem to be significantly different.

Fachgebiet (DDC)

530 Physik

Zitieren

ISO 690

HARTMANN, Alexander K., Ulrich NOWAK, 1999. Universality in three dimensional random-field ground states. In: European Physical Journal / B. 1999, 7(1), pp. 105-109. Available under: doi: 10.1007/s100510050593

BibTex

@article{Hartmann1999Unive-9316,
  year={1999},
  doi={10.1007/s100510050593},
  title={Universality in three dimensional random-field ground states},
  number={1},
  volume={7},
  journal={European Physical Journal / B},
  pages={105--109},
  author={Hartmann, Alexander K. and Nowak, Ulrich}
}

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