Antiferromagnetic spherical spin-glass model

We study the thermodynamic properties and the phase diagrams of a multi-spin antiferromagnetic spherical spin-glass model using the replica method. It is a two-sublattice version of the ferromagnetic spherical p-spin glass model. We consider both the replica-symmetric and the one-step replica-symmet...

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Bibliographic Details
Published in:arXiv.org 2007-12
Main Authors: Liarte, D B, Yokoi, C S O
Format: Article
Language:English
Subjects:
Antiferromagnetism
Broken symmetry
Ferromagnetism
Order parameters
Phase diagrams
Phase transitions
Spin glasses
Thermodynamic properties
Online Access:Get full text
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Summary:We study the thermodynamic properties and the phase diagrams of a multi-spin antiferromagnetic spherical spin-glass model using the replica method. It is a two-sublattice version of the ferromagnetic spherical p-spin glass model. We consider both the replica-symmetric and the one-step replica-symmetry-breaking solutions, the latter being the most general solution for this model. We find paramagnetic, spin-glass, antiferromagnetic and mixed or glassy antiferromagnetic phases. The phase transitions are always of second order in the thermodynamic sense, but the spin-glass order parameter may undergo a discontinuous change.
ISSN:2331-8422
DOI:10.48550/arxiv.0712.0092