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Scaling and criticality of the Kondo effect in a Luttinger liquid
Reinhold Egger, Andrei Komnik
A quantum Monte Carlo simulation method has been developed and applied to study the critical behavior of a single Kondo impurity in a Luttinger liquid. This numerically exact metho…
Electroneutrality and the Friedel sum rule in a Luttinger liquid
Reinhold Egger, Hermann Grabert
Screening in one-dimensional metals is studied for arbitrary electron-electron interactions. It is shown that for finite-range interactions (Luttinger liquid) electroneutrality is…
Exact Fermi-edge singularity exponent in a Luttinger liquid
Andrei Komnik, Reinhold Egger, Alexander O. Gogolin
We report the exact calculation of the Fermi-edge singularity exponent for correlated electrons in one dimension (Luttinger liquid). Focusing on the special interaction parameter g…
Two-impurity Kondo problem for correlated electrons
Karen Hallberg, Reinhold Egger
The behavior of two magnetic impurities coupled to correlated electrons in one dimension is studied using the DMRG technique for several fillings. On-site Coulomb interactions amon…