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On a dynamical-like replica-symmetry-breaking scheme for the spin glass

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  • C. Dominicis
  • E. Brézin

Abstract

Considering the unphysical result obtained in the calculation of the free-energy cost for twisting the boundary conditions in a spin glass, we trace it to the negative multiplicities associated with the Parisi replica-symmetry breaking (RSB). We point out that a distinct RSB, that keeps positive multiplicities, was proposed long ago, in the spirit of an ultra-long time dynamical approach due to Sompolinsky. For an homogeneous bulk system, both RSB schemes are known to yield identical free energies and observables. However, using the dynamical RSB, we have recalculated the twist free energy at the mean-field level. The free-energy cost of this twist is, as expected, positive in that scheme, as it should. Copyright Springer-Verlag Berlin/Heidelberg 2004

Suggested Citation

  • C. Dominicis & E. Brézin, 2004. "On a dynamical-like replica-symmetry-breaking scheme for the spin glass," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 40(3), pages 295-299, August.
    • Handle: RePEc:spr:eurphb:v:40:y:2004:i:3:p:295-299
    DOI: 10.1140/epjb/e2004-00264-0
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