Comments on `` Scattering of bunched fractionally charged quasiparticles" by Chung, Heiblem and Umansky, cond-mat/0305325

Abstract

In the experiments, the quantity measurd is the product of the charge and the magnetic field from which fractional charge is deduced. There is no objection to measuring the fractional charge as long as it is remembered that the product of the charge and the field has been measured. So If the fraction came from the field rather than from the charge, the experiment will remain unaffected. There is no prescription about the mass splitting so there is no way to combine two masses into one. Therefore, the fractional charge can be obtained by changing the state of the quasiparticle without splitting, then there is no bunching.