F-Term Inflation Q-Balls

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.

Comments: 15 pages LaTeX, 6 figures. Discussion of SUGRA corrections added. Published version