3 papers
cond-mat.str-el2001
Comment on ``Quantum Pump for Spin and Charge Transport in a Luttinger Liquid''
Dima E. Feldman, Yuval Gefen
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…
cond-mat.mes-hall2001
Can backscattering off an impurity enhance the current?
D. E. Feldman, Yuval Gefen
It is well known that while forward scattering has no effect on the conductance of one-dimensional systems, backscattering off a static impurity suppresses the current. We study th…
cond-mat.dis-nn2000
Critical exponents of the random-field O(N) model
D. E. Feldman
The critical behavior of the random-field Ising model has been a puzzle for a long time. Different theoretical methods predict that the critical exponents of the random-field ferro…