Neutral Fermions at ν=1/2

1997/09/22 by Dung-Hai Lee, Dung‐Hai Lee, Lee, Dung-Hai
Physics and Astronomy · #FOS: Physical sciences #Fermion #High-Energy Particle Collisions Research #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Theoretical physics #cond-mat.mes-hall

paper · pdf · doi:10.48550/arxiv.cond-mat/9709233

An error in Eq.(11) is corrected

openalex publication_date 1997/09/22 · arxiv created 1998/03/11 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

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 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.

Related

• Effective lowering of the dimensionality in strongly correlated two dimensional electron gas
• Compressibility of a quantum Hall system at ν= 1/2
• Half-Filled Lowest Landau Level on a Thin Torus
• Lowest Landau level bosonization
• The Symmetries of Fermion Fluids at Low Dimensions