A Holographic Fractional Topological Insulator

TL;DR

This paper presents a holographic model of a fractional topological insulator, demonstrating that its surface supports a fractional quantum Hall current akin to a Laughlin state, advancing theoretical understanding of such exotic phases.

Contribution

It provides the first holographic realization of a fractional topological insulator, linking topological insulators with holographic duality methods.

Findings

Surface supports fractional quantum Hall current

Current corresponds to half of Laughlin state

Validates holographic approach for fractional topological phases

Abstract

We give a holographic realization of the recently proposed low energy effective action describing a fractional topological insulator. In particular we verify that the surface of this hypothetical material supports a fractional quantum Hall current corresponding to half that of a Laughlin state.