Comment on "Unconventional Fermi Surface Instabilities in the Kagome Hubbard Model" by M. Kiesel, C. Platt, and R. Thomale, Phys. Rev. Lett. {\bf 110}, 126405 (2013)

TL;DR

This comment critiques a 2013 paper by Kiesel et al., arguing that their method overemphasizes ferromagnetic order, which raises questions about the validity of their theoretical approach.

Contribution

It highlights potential over-biases in the original study's theoretical method, questioning its reliability in predicting Fermi surface instabilities.

Findings

Original paper overestimates ferromagnetic order

Theoretical bias affects the interpretation of instabilities

Calls for more balanced theoretical approaches

Abstract

This is a comment on Phys. Rev. Lett. {\bf 110}, 126405 (2013), showing it biases the ferromagnetic order more than mean field theories would do. With over-biases like this, the theoretical method applied in the given context is called into question.