# COSMO19

2-6 September 2019
Europe/Zurich timezone

## Irreducible gravitational wave emission from a cosmic defect network

5 Sep 2019, 15:30
20m
Talk Gravitational Waves and Black Holes

### Speaker

Dr Joanes Lizarraga (University of the Basque Country)

### Description

Independently of the order of the phase transition, topology of the defects, and nature, global or gauge, of the symmetry broken, defect networks emit gravitational waves (GWs). In this talk I will review how any scaling defect network emits an irreducible GW background, which has scale-invariant amplitude for $f\gg f_{\rm eq}$. I will show results of numerical experiments where we compute, using different techniques, the GW signal generated by the scalar dynamics of a global theory. I will also briefly discuss the ability of direct detection GW observatories to detect this background.

### Primary author

Dr Joanes Lizarraga (University of the Basque Country)