NONUNIVERSALITY IN SHORT-TIME CRITICAL-DYNAMICS

Citation
Cs. Simoes et Jrd. Defelicio, NONUNIVERSALITY IN SHORT-TIME CRITICAL-DYNAMICS, Journal of physics. A, mathematical and general, 31(35), 1998, pp. 7265-7272
Citations number
26
Categorie Soggetti
Physics,"Physycs, Mathematical
ISSN journal
03054470
Volume
31
Issue
35
Year of publication
1998
Pages
7265 - 7272
Database
ISI
SICI code
0305-4470(1998)31:35<7265:NISC>2.0.ZU;2-M
Abstract
We study the behaviour of dynamical critical exponents of the two-dime nsional Ising model with a line of defects. Simulations done at an ear ly time (first 100 Monte Carlo steps) reveal that the critical exponen t theta of Janssen er al (Z. Phys. B 73 539) depends on the strength o f the exchange coupling constant (J') of the altered line. On the othe r hand, our simulations permit us to conclude that the dynamical criti cal exponent z is not sensitive to changes in J'. In addition, we inve stigate the possible invariance of the anomalous dimension (x(0)) of t he magnetization at the beginning of the process.