Spin, bond and global fluctuation–dissipation relations in the non-equilibrium spherical ferromagnet

@inproceedings{Annibale2006SpinBA,
  title={Spin, bond and global fluctuation–dissipation relations in the non-equilibrium spherical ferromagnet},
  author={Alessia Annibale and Peter Sollich},
  year={2006}
}
We study the out-of-equilibrium dynamics of the spherical ferromagnet after a quench to its critical temperature. We calculate correlation and response functions for spin observables which probe length scales much larger than the lattice spacing but smaller than the system size, and find that the asymptotic fluctuation–dissipation ratio (FDR) X∞ is the same as for local observables. This is consistent with our earlier results for the Ising model in dimension d = 1 and d = 2. We also check that… CONTINUE READING

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