F-Term Inflation Q-Balls

TL;DR

This paper provides a comprehensive analysis of Q-ball solutions in supersymmetric F-term hybrid inflation, revealing how these solutions depend on model parameters and exploring their potential cosmological implications.

Contribution

It introduces a general method to derive all F-term inflation Q-balls from a fundamental solution at ppa=1, expanding understanding of their properties and roles.

Findings

Q-ball solutions can be rescaled for different superpotential couplings

Complete set of solutions for ppa=1 is characterized

Implications for cosmology are discussed

Abstract

A general analysis of Q-ball solutions of the supersymmetric F-term hybrid inflation field equations is given. The solutions consist of a complex inflaton field and a real symmetry breaking field, with a conserved global charge associated with the inflaton. It is shown that the Q-ball solutions for any value of the superpotential coupling, \kappa, may be obtained from those with \kappa = 1 by rescaling the space coordinates. The complete range of Q-ball solutions for the case \kappa = 1 is given, from which all possible F-term inflation Q-balls can be obtained. The possible role of F-term inflation Q-balls in cosmology is discussed.