Sum rule for transport in a Luttinger liquid with long range interaction in the presence of an impurity
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We show that the non-linear dc transport in a Luttinger liquid with interaction of finite range in the presence of an impurity is governed by a sum rule which causes the charging energy to vanish.
5 pages, RevTeX, 1 figure, to be published in Europhysics Letters
5 pages, RevTeX, 1 figure, to be published in Europhysics Letters