Nonlinear susceptibilities asymptotics

Some graphic examples justifying these statements are presented in Figures 4.12 and 4.13, where the components of two nonlinear complex susceptibilities are plotted as the functions of the parameter ct. For a given sample, a in a natural way serves as a dimensionless inverse temperature. In those figures, the solid lines correspond to the above-proposed asymptotic formulas where we retain the terms, including a 3. The circles show the results of numerical solutions obtained by the method described in Ref. 67. Note that even at ct 5 the accuracy is still rather high. 

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