Remarks on Goldstone bosons and hard thermal loops

TL;DR

This paper derives the hard thermal loop effective action for Goldstone bosons using symmetry principles, illustrating its application to pseudoscalar mesons and magnons, and analyzing their scattering contributions.

Contribution

It introduces a symmetry-based derivation of the hard thermal loop effective action specifically for Goldstone bosons, extending previous gauge boson results.

Findings

Derived the effective action for Goldstone bosons from gauge boson results.

Discussed applications to pseudoscalar mesons and magnons.

Analyzed the hard thermal loop contribution to scattering processes.

Abstract

The hard thermal loop effective action for Goldstone bosons is deduced by symmetry arguments from the corresponding result for gauge bosons. Pseudoscalar mesons in Chromodynamics and magnons in an antiferromagnet are discussed as special cases, including the hard thermal loop contribution to their scattering.