Fluctuation-dissipation relation for the Ising-Glauber model with arbitrary exchange couplings

Details Fluctuation-dissipation relation for the Ising-Glauber model with arbitrary exchange couplings Fluctuation-dissipation relation for the Ising-Glauber model with arbitrary exchange couplings

2002-12-04

arxiv.org/abs/cond-mat/0212084v1

Physics

Condensed Matter

Statistical Mechanics

8 pages

Scientific paper

We derive an exact expression of the response function to an infinitesimal magnetic field for the Ising-Glauber model with arbitrary exchange couplings.nThe result is expressed in terms of thermodynamic averages and does not depend on initial conditions or dimension of space. The comparison with the equilibrium case gives some understanding on the way the fluctuation-dissipation theorem is violated out-of-equilibrium.

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