Dual Vortex Theory of Strongly Interacting Electrons: Non-Fermi Liquid to the (Hard) Core
Abstract
As discovered in the quantum Hall effect, a very effective way for strongly-repulsive electrons to minimize their potential energy is to aquire non-zero relative angular momentum. We pursue this mechanism for interacting two-dimensional electrons in zero magnetic field, by employing a representation of the electrons as composite bosons interacting with a Chern-Simons gauge field. This enables us to construct a dual description in which the fundamental constituents are vortices in the auxiliary boson fields. The resulting formalism embraces a cornucopia of possible phases. Remarkably, superconductivity is a generic feature, while the Fermi liquid is not -- prompting us to conjecture that such a state may not be possible when the interactions are sufficiently strong. Many aspects of our earlier discussions of the nodal liquid and spin-charge separation find surprising incarnations in this new framework.
Keywords
Cite
@article{arxiv.cond-mat/9903294,
title = {Dual Vortex Theory of Strongly Interacting Electrons: Non-Fermi Liquid to the (Hard) Core},
author = {Leon Balents and Matthew P. A. Fisher and Chetan Nayak},
journal= {arXiv preprint arXiv:cond-mat/9903294},
year = {2009}
}
Comments
Modified dicussion of the hard-core model, correcting several mistakes