Note on "Sonic Mach cones induced by fast partons in a perturbative quark-gluon plasma" arXiv:0802.2254

TL;DR

This paper critiques a previous study on Mach cone formation in quark-gluon plasma, arguing that their approximations obscure the original shock structure caused by fast partons.

Contribution

It provides a critical analysis of prior work, highlighting how certain approximations can distort the physical picture of Mach cone formation.

Findings

Original bow shock structure is smeared out after approximations.

Critique emphasizes importance of accurate modeling for Mach cone detection.

Highlights potential misinterpretations in previous theoretical analyses.

Abstract

We make remarks on Neufeld {\it et al.}'s [{\it Phys. Rev. C} 78, 041901(R) (2008), arXiv:0802.2254] paper especially about the Mach cone formation. We argue that the original bow shock structure (as a fast parton moving through a quark-gluon plasma) has been smeared out after the approximations made by Neufeld {\it et al.}