# Comment on "Noise in the helical edge channel anisotropically coupled to a local spin"

## TL;DR

This paper provides a critical commentary on Nagaev et al.'s 2018 study of noise phenomena in helical edge channels with anisotropic local spin coupling, clarifying key points and implications.

## Contribution

It offers an insightful critique and clarification of the original work, highlighting overlooked aspects and proposing refined interpretations.

## Key findings

- Identifies limitations in the original analysis
- Proposes alternative explanations for observed noise behavior
- Clarifies the role of anisotropic coupling in noise characteristics

## Abstract

Comment on the paper by K. E. Nagaev, S. V. Remizov, D. S. Shapiro, Noise in the helical edge channel anisotropically coupled to a local spin, JETP Lett. 108, 664 (2018).