Deconstruction of the trap model for the new conducting state in two dimensions

A key prediction of the trap model for the new conducting state in two dimensions is that the resistivity turns upwards below some characteristic temperature, (formula presented) Altshuler, Maslov, and Pudalov [Phys. Status Solidi B 218, 193 (2000); Phys. Rev. Lett, 82, 145 (1999)] have argued that the reason why no upturn has been observed for the low density conducting samples is that the temperature was not low enough in the experiments. We show here that (formula presented) within the Altshuler, Maslov, and Pudalov trap model actually increases with decreasing density, contrary to their claim. Consequently, the trap model is not consistent with the experimental trends.