English

Neutral Fermions at $\nu=1/2$

Mesoscale and Nanoscale Physics 2008-02-03 v4

Abstract

We present a particle-hole symmetric theory for a two-dimensional electron gas at filling factor one half. In this theory, elementary excitations are dipole-like fermions floating on top of the ν=1/2\nu=1/2 boson quantum Hall liquid. In the absence of disorder these dipoles can form a Fermi-liquid. Disorder can break them apart and drive the ground state into a quantum critical state.

Keywords

Cite

@article{arxiv.cond-mat/9709233,
  title  = {Neutral Fermions at $\nu=1/2$},
  author = {Dung-Hai Lee},
  journal= {arXiv preprint arXiv:cond-mat/9709233},
  year   = {2008}
}

Comments

An error in Eq.(11) is corrected

R2 v1 2026-07-22T11:59:42.455Z