Temperature Chaos in Two-Dimensional Ising Spin Glasses with Binary Couplings: a Further Case for Universality

Jovanka Lukic 1, Enzo Marinari 2, Olivier C. Martin 3, Silvia Sabatini 4

Journal of Statistical Mechanics (2006) L10001

We study temperature chaos in a two-dimensional Ising spin glass with random quenched bimodal couplings, by an exact computation of the partition functions on large systems. We study two temperature correlators from the total free energy and from the domain wall free energy: in the second case we detect a chaotic behavior. We determine and discuss the chaos exponent and the fractal dimension of the domain walls.

  • 1. Dipartimento di Fisica, Universita` di Roma Tor Vergata,
    Università degli studi di Roma II
  • 2. Dipartimento di Fisica, INFM-CNR and INFN,
    Università degli studi di Roma I - La Sapienza
  • 3. Laboratoire de Physique Théorique et Modèles Statistiques (LPTMS),
    CNRS : UMR8626 – Université Paris XI - Paris Sud
  • 4. Dipartimento di Fisica,
    Università degli studi di Roma I - La Sapienza