Comment on ``Quantum Pump for Spin and Charge Transport in a Luttinger Liquid''

Details Comment on ``Quantum Pump for Spin and Charge Transport in a Luttinger Liquid'' Comment on ``Quantum Pump for Spin and Charge Transport in a Luttinger Liquid''

2001-11-21

arxiv.org/abs/cond-mat/0111411v1

Physics

Condensed Matter

Strongly Correlated Electrons

Scientific paper

This is a Comment to the paper by Sharma and Chamon in Phys. Rev. Lett. 87
(2001) 096401 (cond-mat/0011025). We show that the prediction of the universal
charge pumped per cycle in the fast limit for attractive electron-electron
interaction is invalid. We also prove the quantization of the pumped charge for
repulsive interaction in the limit of adiabatic pumping.

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