Gravitational waves from Affleck-Dine condensate fragmentation

TL;DR

This paper calculates the gravitational wave background produced by Affleck-Dine condensate fragmentation in the early universe, revealing a multi-peak spectrum linked to supersymmetry breaking scales, especially prominent around kHz frequencies for TeV-scale breaking.

Contribution

It introduces a detailed computation of gravitational waves from Affleck-Dine condensate fragmentation considering a logarithmic potential correction in gravity-mediated supersymmetry breaking.

Findings

A significant gravitational wave background can be generated during Q-ball formation.

The spectrum exhibits multiple peaks with a trough related to the supersymmetry breaking scale.

Peak frequencies are around kHz for TeV-scale supersymmetry breaking.

Abstract

We compute the stochastic gravitational wave production from Affleck-Dine condensate fragmentation in the early universe, focusing on an effective potential with a logarithmic mass correction that typically arises in gravity mediated supersymmetry breaking scenarios. We find that a significant gravitational wave background can be generated when Q-balls are being formed out of the condensate fragmentation. This gravitational wave background has a distinct multi-peak power spectrum where the trough is closely linked to the supersymmetry breaking scale and whose frequencies are peaked around kHz for TeV supersymmetry breaking.