Q-ball perturbations with more details: linear analysis vs lattice

TL;DR

This paper provides a detailed analysis of Q-ball perturbations, comparing linear analysis with lattice simulations, and discusses implications for early universe physics.

Contribution

It extends previous studies by clarifying the applicability of linear analysis to Q-ball perturbations and includes discussion on FLS Q-balls.

Findings

Linear analysis domain of applicability clarified

Comparison with lattice simulations conducted

Implications for early universe physics discussed

Abstract

We analyze in detail the interactions between non-topological soliton (Q-ball) and its perturbations. We extend the previous literature by carefully identifying the domain of applicability of linear analysis as well discussion of the FLS Q-balls. Applications to the early universe physics are briefly commented.