Friedel oscillations in a Luttinger liquid with long-range interactions
نویسندگان
چکیده
We introduce a path-integral approach that allows to compute charge density oscillations in a Luttinger liquid with impurities. We obtain an explicit expression for the envelope of Friedel oscillations in the presence of arbitrary electron-electron potentials. As examples, in order to illustrate the procedure, we show how to use our formula for contact and Coulomb potentials. Pacs: 05.30.Fk, 71.10.Pm
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