Dynamics of models with tensor order parameter near an isolated point on the phase-transition curve

The dynamics of models with tensor order parameter near an isolated point on the phase-transition curve is investigated. The interaction between the order parameter and the densities of the conserved quantities is considered. The method using the dynamical renormalization group and $\varepsilon$-expansion is used to calculate the lowest $\varepsilon$-approximations for the dynamical critical exponent and the exponent of the anomalous behavior of the Onsager coefficient.