Aspects of higher dimensional quantum Hall effect: Bosonization, entanglement entropy

TL;DR

This paper reviews higher dimensional quantum Hall effects, focusing on noncommutative field theory descriptions, bulk-edge actions, and entanglement entropy, revealing universal behavior in certain cases and modifications at higher Landau levels.

Contribution

It introduces a unified framework for higher dimensional QHE using noncommutative field theory and analyzes entanglement entropy in complex projective spaces.

Findings

Entanglement entropy proportional to phase-space area for ν=1.

Universal constant in entanglement entropy across dimensions.

Modifications occur for higher Landau levels.

Abstract

I give a brief review of higher dimensional quantum Hall effect (QHE) and how one can use a general framework to describe the lowest Landau level dynamics as a noncommutative field theory whose semiclassical limit leads to anomaly free bulk-edge effective actions in any dimension. I then present the case of QHE on complex projective spaces and focus on the entanglement entropy for integer QHE in even spatial dimensions. In the case of $\nu=1$, a semiclassical analysis shows that the entanglement entropy is proportional to the phase-space area of the entangling surface with a universal overall constant, same for any dimension as well as abelian or nonabelian background magnetic fields. This is modified for higher Landau levels.