RG study of a non local sine-Gordon model
classification
✦ hep-th
cond-mat.str-el
keywords
localmodelsine-gordonaffectsapproximationbackwardcharge-densitycompare
read the original abstract
We study a non local version of the sine-Gordon model connected to a many-body system with backward and umklapp scattering processes. Using renormalization group methods we derive the flow equations for the couplings and show how non locality affects the gap in the spectrum of charge-density excitations. We compare our results with previous predictions obtained through the self-consistent harmonic approximation.
This paper has not been read by Pith yet.
discussion (0)
Sign in with ORCID, Apple, or X to comment. Anyone can read and Pith papers without signing in.