Mapping interacting onto non-interacting quantum Hall systems
Mesoscale and Nanoscale Physics
2007-05-23 v1
Abstract
We construct an explicit duality between the interacting quantum Hall system in the lowest Landau level and a non-interacting Landau problem. This is done by absorbing the interaction into the gauge field in the form of an effective magnetic vector potential. The result is analogous to, and illuminates the microscopic origin of, the well-known composite fermion model, but has several advantageous properties. Using this duality we derive, for an arbitrary short-range interaction, analytic expressions for the ground state energy and the excitation gap as functions of the filling fraction. We find good agreement with existing results.
Keywords
Cite
@article{arxiv.cond-mat/0702101,
title = {Mapping interacting onto non-interacting quantum Hall systems},
author = {J N Kriel and F G Scholtz},
journal= {arXiv preprint arXiv:cond-mat/0702101},
year = {2007}
}
Comments
Revtex, 4 Pages, submitted to Phys. Rev. Lett