Discontinuity of the dynamic critical exponents ofO(n)-symmetric systems
Then-component model of Sasvári, Schwabl, and Szépfalusy is analyzed by means of renormalized field theory to two-loop order. Singular two-loop contributions have a significant effect on the nature of the stability boundary of the dynamic scaling region in then—d plane. Along this boundary the dynamic critical exponents exhibit unexpected discontinuities.
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