Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2004-04-08
Phys. Rev. B 70, 104401 (2004)
Physics
Condensed Matter
Statistical Mechanics
12 pages, figures included, version to appear in Phys. Rev. B
Scientific paper
10.1103/PhysRevB.70.104401
Nonequilibrium surface autocorrelation and autoresponse functions are studied numerically in semi-infinite critical systems in the dynamical scaling regime. Dynamical critical behaviour is examined for a nonconserved order parameter in semi-infinite two- and three-dimensional Ising models as well as in the Hilhorst-van Leeuwen model. The latter model permits a systematic study of surface aging phenomena, as the surface critical exponents change continuously as function of a model parameter. The scaling behaviour of surface two-time quantities is investigated and scaling functions are confronted with predictions coming from the theory of local scale invariance. Furthermore, surface fluctuation-dissipation ratios are computed and their asymptotic values are shown to depend on the values of surface critical exponents.
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