Renormalization Group Potential for Quasi-One-Dimensional Correlated
Systems
release_5ijr7i7ykfhknoomrghedzgl7m
by
Ming-Shyang Chang, Wei Chen, Hsiu-Hau Lin
2005
Abstract
We studied the correlated quasi-one-dimensional systems by one-loop
renormalization group techniques in weak coupling. In contrast to conventional
g-ology approach, we formulate the theory in terms of bilinear currents and
obtain all possible interaction vertices. Furthermore, the one-loop
renormalization group equations are derived by operator product expansions of
these currents at short length scale. It is rather remarkable that these
coupled non-linear equations, after appropriate rescaling, can be casted into
potential flows. The existence of what we nicknamed "RG potential" provides a
natural explanation of the emergent symmetry enhancement in ladder systems.
Further implications arisen from the RG potential are also discussed at the
end.
In text/plain
format
Archived Files and Locations
application/pdf 364.6 kB
file_lgyyytp57rf57ebeyxf2hlfyuy
|
arxiv.org (repository) web.archive.org (webarchive) |
cond-mat/0508660v1
access all versions, variants, and formats of this works (eg, pre-prints)