Limiting Dynamics for Spherical Models of Spin Glasses with Magnetic Field

Details Limiting Dynamics for Spherical Models of Spin Glasses with Magnetic Field Limiting Dynamics for Spherical Models of Spin Glasses with Magnetic Field

2008-06-21

arxiv.org/abs/0806.3519v1

Physics

Mathematical Physics

Scientific paper

We study the Langevin dynamics for the family of spherical spin glass models of statistical physics, in the presence of a magnetic field. We prove that in the limit of system size N approaching infinity, the empirical state correlation, the response function, the overlap and the magnetization for these N-dimensional coupled diffusions converge to the non-random unique strong solution of four explicit non-linear integro-differential equations, that generalize the system proposed by Cugliandolo and Kurchan in the presence of a magnetic field. We then analyze the system and provide a rigorous derivation of the FDT regime in a large area of the temperature-magnetization plane.

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