Astrophysical seminar - October

Our study 2407.18845 investigates the possibility of generating gravitational waves (GWs) from a curvature-induced phase transition of a non-minimally coupled scalar dark matter field with a Higgs-portal. This analysis is conducted during the transition from inflation to kination for various inflationary scales, considering both positive and negative values of the non-minimal coupling, while also examining the potential for triggering Electroweak symmetry breaking. Notably, kination enhances the GW amplitudes, significantly restricting the viable parameter space. While the GW spectra are high-frequency for high-scale inflation, certain regions of the parameter space allow for a potential detection with future experiments