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Article Dans Une Revue Physical Review B: Condensed Matter and Materials Physics (1998-2015) Année : 2011

Dynamics in the Sherrington-Kirkpatrick Ising spin glass at and above T-g

Résumé

A detailed numerical study is made of relaxation at equilibrium in the Sherrington-Kirkpatrick Ising spin glass (ISG) model, at and above the critical temperature T-g. The data show a long time stretched exponential relaxation q(t) similar to exp{-[t/tau(T)](beta(T))} with an exponent beta(T) tending to approximate to 1/3 at T-g. The results are compared to those which were observed by A. T. Ogielski, [Phys. Rev. B 32, 7384 (1985)] in the three-dimensional ISG model and are discussed in terms of a phase space percolation transition scenario.
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Dates et versions

hal-00677374 , version 1 (08-03-2012)

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Alain Billoire, Ian Campbell. Dynamics in the Sherrington-Kirkpatrick Ising spin glass at and above T-g. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2011, 84, pp.054442. ⟨10.1103/PhysRevB.84.054442⟩. ⟨hal-00677374⟩
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