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arxiv: cond-mat/9809170 · v1 · submitted 1998-09-11 · ❄️ cond-mat.dis-nn

Spin-glass model with partially annealed asymmetric bonds

classification ❄️ cond-mat.dis-nn
keywords bondsspin-glassphasespinstemperatureasymmetricmodelthermostat
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We have considered the two-spin interaction spherical spin-glass model with asymmetric bonds (coupling constants). Besides the usual interactions between spins and bonds and between the spins and a thermostat with temperature $T_{\sigma}$ there is also an additional factor: the bonds are not assumed random {\it a priori} but interact with some other thermostat at the temperature $T_{J}$. We show that when the bonds are frozen with respect to the spins a first order phase transition to a spin-glass phase occurs, and the temperature of this transition tends to zero if $T_J$ is large. Our analytical results show that a spin-glass phase can exist in mean-field models with nonrelaxational dynamics.

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