Multipole Expansion in the Quantum Hall Effect
Strongly Correlated Electrons
2016-04-20 v2 Mesoscale and Nanoscale Physics
High Energy Physics - Theory
Abstract
The effective action for low-energy excitations of Laughlin's states is obtained by systematic expansion in inverse powers of the magnetic field. It is based on the W-infinity symmetry of quantum incompressible fluids and the associated higher-spin fields. Besides reproducing the Wen and Wen-Zee actions and the Hall viscosity, this approach further indicates that the low-energy excitations are extended objects with dipolar and multipolar moments.
Cite
@article{arxiv.1512.02147,
title = {Multipole Expansion in the Quantum Hall Effect},
author = {Andrea Cappelli and Enrico Randellini},
journal= {arXiv preprint arXiv:1512.02147},
year = {2016}
}
Comments
29 pages, 5 figures; v2: comments and references added