Nonuniversality in short-time critical dynamics

Details Nonuniversality in short-time critical dynamics Nonuniversality in short-time critical dynamics

1998-10-08

arxiv.org/abs/cond-mat/9810105v1

J. Phys. A: Math. Gen. 31 (1998) 7265-7272

Physics

Condensed Matter

Statistical Mechanics

8 figures

Scientific paper

10.1088/0305-4470/31/35/007

We study behaviour of dynamical critical exponents of the two-dimensional Ising model with a line of defects. Simulations done at an early time (first 100 Monte Carlo steps) reveal that the critical exponent of Janssen et al (Z. Phys. B 73 539) depends on the strength of the exchange coupling constant (J') of the altered line. On the other hand, our simulations permit us to conclude that the dynamical critical exponent z is not sensitive to changes in J'. In adition, we investigate the possible invariance of the anomalous dimension of the magnetization at the beginning of the process.

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