Dynamical space-time symmetry for ageing far from equilibrium

Abstract

The dynamical scaling of ageing ferromagnetic systems can be generalized to a local scale invariance. This yields a prediction for the causal two-time response function, which has been numerically confirmed in the Glauber-Ising model quenched into the ordered phase. For a dynamical exponent z=2, a new embedding of the Schrödinger group into the conformal group and the resulting conditions for the validity of local scale invariance are discussed.

Latex2e & snmp2003.cls, 8 pp. Invited talk given at the 5th International Conference on `Symmetry in nonlinear mathematical physics', Kyiv, June 2003

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