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VOLUME 57 | ISSUE 1 | PAGE 48
Anomalous orthogonality catastrophe for Luttinger liguid with repulsion
The Orthogonality Catastrophe for Luttinger liquid is studied. Surprisingly, it is found, that the backseattering from external potential cause an enhancement ot the infrared divergence for repulsive internal interaction and changes the type of the singularity from usual logarithmic to a power one.