The last word in strong correlations
Strongly Correlated Electrons
2011-09-23 v1
Abstract
In the Fractional Quantum Hall Effect (FQHE), in the noninteracting limit, only a fraction of the Lowest Landau Level (LLL) is occupied, producing a huge degeneracy. Interactions lift this degeneracy and mix in higher LL's. In the limit in which we ignore all but the LLL (i.e., let the inverse electron mass ), the kinetic energy is an irrelevant constant and the ratio of potential to kinetic energy is essentially infinite, making this the most strongly correlated problem imaginable. I give a telegraphic review of the Hamiltonian Theory of the FQHE developed with Ganpathy Murthy that deals with this problem with some success. A nodding acquaintance with FQHE physics is presumed.
Cite
@article{arxiv.1109.4902,
title = {The last word in strong correlations},
author = {R. Shankar},
journal= {arXiv preprint arXiv:1109.4902},
year = {2011}
}
Comments
Dedicated to Dieter Vollhardt on his 60th birthday