Description
Cosmic textures are non-trivial field configurations arising from spontaneous symmetry-breaking, G->H, for which \pi_3(G/H) is nontrivial. Global textures are known to be sources of gravitational waves in the literature, whereas gauged textures have not been well studied, since some of them are pure gauge. In the present study, we focus on gauged SU(2) and O(4) textures, following the pioneering work of Davis (1987), in which it was shown that the gauged SU(2) texture is pure gauge, while the gauged O(4) texture behaves like radiation. We estimate the gravitational wave spectra using field-theoretic simulations and discuss the differences between these cases.
