Behavior of logarithmic branch cuts in the self-energy of gluons at finite temperature

TL;DR

This paper discusses how logarithmic branch cuts in the gluon self-energy behave at finite temperature, showing a cancellation between zero-temperature and thermal contributions.

Contribution

It provides a straightforward argument demonstrating the cancellation of specific logarithmic terms in the gluon self-energy at finite temperature.

Findings

Log(-k^2) terms cancel between zero-temperature and thermal parts

Simplifies understanding of gluon self-energy at finite temperature

Highlights the structure of thermal corrections in QCD

Abstract

We give a simple argument for the cancellation of the log(-k^2) terms (k is the gluon momentum) between the zero-temperature and the temperature-dependent parts of the thermal self-energy.