Comment on "Theoretical analysis of the transmission phase shift of a quantum dot in the presence of Kondo correlations"

Details Comment on "Theoretical analysis of the transmission phase shift of a quantum dot in the presence of Kondo correlations" Comment on "Theoretical analysis of the transmission phase shift of a quantum dot in the presence of Kondo correlations"

2006-03-03

arxiv.org/abs/cond-mat/0603073v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

To appear as a Comment in PRL

Scientific paper

10.1103/PhysRevLett.96.189705

Recently, A. Jerez, P. Vitushinsky and M. Lavagna [Phys. Rev. Lett. 95, 127203 (2005)] claimed that the transmission phase through a quantum fot, as measured via the Aharonov-Bohm interferometer, differs from the phase which determines the corresponding conductance. Here we show that this claim is wrong for the single level Anderson model, which is usually used to describe the quantum dot. So far, there exists no derivation of this claim from any explicit theoretical model.

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