Multiple-quasiparticle agglomerates at \nu=2/5

TL;DR

This paper compares two theoretical models for edge states at filling factor 2/5, showing they predict the same dominant role for quasiparticle agglomerates due to neutral modes, explaining tunneling anomalies.

Contribution

It provides a comparative analysis of the Fradkin-Lopez and Wen models, highlighting their agreement on the dominance of quasiparticle agglomerates at low energy.

Findings

Both models predict quasiparticle agglomerates dominate over single quasiparticles.

Neutral modes with finite velocity are key to this behavior.

Results explain anomalous tunneling conductance and noise.

Abstract

We investigate the dynamics of quasiparticle agglomerates in edge states of the Jain sequence for \nu=2/5. Comparison of the Fradkin-Lopez model with the Wen one is presented within a field theoretical construction, focusing on similarities and differences. We demonstrate that both models predict the same universal role for the multiple-quasiparticle agglomerates that dominate on single quasiparticles at low energy. This result is induced by the presence of neutral modes with finite velocity and is essential to explain the anomalous behavior of tunneling conductance and noise through a point contact.