Third order dielectric time dependent susceptibilities and the 'Box   Model'
  We present here the calculation of the 'time dependent' moduli of the third order, dielectric, susceptibilities measured at the frequency omega of the applied electric field and at the frequency 3 omega. The calculation is performed within the frame work of the 'box model', both in the ideal case of a pure third order polarization and in the practical case studied by Samanta and Richert [J. Chem. Phys. 140, 247101 (2014)] where appears also a first order polarization contribution. We show that, in the two cases, those two modules have a largely different dynamics and that the results can be easily compared with experiments thanks to the data gathered by Samanta and Richert. This should provide a new test on the validity of the 'box model'. 
Robert M. Pick
cond-mat.dis-nn