Comment on "Anomalous Reentrant 5/2 Quantum Hall Phase at Moderate Landau-Level-Mixing Strength''

TL;DR

This paper critiques a recent study on the nu=5/2 quantum Hall state, arguing that the proposed wavefunction does not represent a fractional quantum Hall phase but instead indicates phase separation or stripe formation.

Contribution

It provides a critical analysis showing that the wavefunction in the referenced study does not correspond to an FQH state, challenging prior claims.

Findings

The wavefunction exhibits phase separation or stripe formation.

The proposed state is not a fractional quantum Hall state.

The analysis refutes the original claim of an anomalous reentrant phase.

Abstract

Das, Das, and Mandal (PRL 131, 056202, 2023) examine a wavefunction for nu = 5/2 on a sphere including moderate Landau-Level mixing evaluated perturbatively. The wavefunction they find is not a fractional quantum Hall (FQH) state as claimed, but rather shows phase separation or bubble/stripe formation.