Feldman argues that simply having a large velocity mismatch and long wavelength disorder is not likely to result in sufficient non-equilibration of Majorana edge modes at $\nu =5/2$ to explain recent thermal transport experiments. I agree that this picture alone is probably too simple, although small modifications of the mechanism could still be viable.

• Received 22 August 2018

DOI:https://doi.org/10.1103/PhysRevB.98.167402