A mixed planar spin glass

S.R. Vieira, F.D. Nobre and F.A. da Costa

Physica A: Statistical Mechanics and its Applications, 1995, vol. 214, issue 4, 511-525

Abstract: We consider a mixed spin-glass model defined in terms of two groups of spins, XY and p-state clock variables, respectively; the interactions are infinite-range-like and between distinct groups only. An anisotropy parameter Dp, which favours p directions in the plane, is introduced for the XY variables, such that one can interpolate between the XY (Dp = 0; p → ∞) and p-state clock (Dp → ∞) models. We implement Parisi's replica-symmetry-breaking Ansatz and analyse the different types of order-parameter functions. An special attention is dedicated to the case p = 3, for which an interesting crossover is observed.

Date: 1995
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:214:y:1995:i:4:p:511-525

DOI: 10.1016/0378-4371(94)00295-5

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