Global second-order phase transitions are expected to produce scale-invariant gravitational wave spectra. In this manuscript we explore the dynamics of a symmetry-breaking phase transition using lattice simulations. We explicitly calculate the stochastic gravitational wave background produced during the transition and subsequent self-ordering phase. We comment on this signal as it compares to the scale-invariant spectrum produced during inflation.
@article{arxiv.1111.4014,
title = {Gravitational Waves from Global Second Order Phase Transitions},
author = {John T. Giblin and Larry R. Price and Xavier Siemens and Brian Vlcek},
journal= {arXiv preprint arXiv:1111.4014},
year = {2015}
}