Abstract
Finite-size scaling effects of the Ising model with quenched random impurities are studied, focusing on critical dynamics. In contrast to the pure Ising model, disordered systems are characterized by continuous relaxation time spectra. Dynamic field theory is applied to compute the spectral densities of the magnetizationM(t) and ofM 2(t). In addition, universal cumulant ratios are calculated to second order in ε1/4, where ε=4−d andd<4 denotes the spatial dimension.
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Oerding, K. Relaxation times in a finite Ising system with random impurities. J Stat Phys 78, 893–916 (1995). https://doi.org/10.1007/BF02183693
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DOI: https://doi.org/10.1007/BF02183693