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The mode coupling equations for the time-dependent correlation functions are solved to lowest order in epsilon =d c -d for several models of critical dynamics where the 'conventional' theory is expected for the dimensionality d greater than d c . The results are in agreement with recent renormalization group calculations. New results are obtained for the tricritical behaviour of 3 He- 4 He, as well as for the critical amplitude of various transport coefficients.
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Gunton et al. (1975) studied this question.
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