Anomalously Soft Droplets and Aging in Short-ranged Spin Glasses

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We extend the standard droplet scaling theory for isothermal aging in spin glasses assuming that the effective stiffness constant of droplets as large as extended defects is vanishingly small. A novel dynamical order parameter and the associated dynamical susceptibility emerge. Breaking of the fluctuation dissipation theorem takes place at the dynamical order parameter well below the equilibrium Edwards-Anderson order parameter at which the time translational invariance is strongly broken. The scenario is examined numerically in a 4 dimensional EA Ising spin glass model.
4 Pages, 2 figures, revised version

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Disordered Systems and Neural Networks, Statistical Mechanics

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http://salesiana.dossiersoluciones.com/handle/123456789/18887

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0202110
 http://arxiv.org/abs/cond-mat/0202110

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arXiv