Speaker
António Morais
(Universidade de Aveiro)
Description
We study supercooled first-order phase transitions in a wide class of conformal Majoron-like U(1) models that explain the totality of active neutrino oscillation data and feature testable signatures of Stochastic Gravitational Waves Background (SGWB) at the reach of both space and earth-based interferometers. We demonstrate that these models can produce a detectable GW signal in LISA and LIGO's O5 observing run, and are thus amenable to testing in a broad frequency range from mHz to 100~Hz. As a key point, We discuss the implications of the current LIGO-Virgo-Kagra (LVK) data in setting constraints on the mass scale of new scalars for the class of models under consideration.
Author
António Morais
(Universidade de Aveiro)
