Speaker
Ahmad Elsayed Moursy
(Cairo University)
Description
Stochastic Gravitational Wave Backgrounds (SGWBs) can arise from a variety of cosmological and astrophysical sources. In this work, we explore several well-motivated scenarios within Grand Unified Theories (GUTs) that can generate a SGWB, where an inflationary phase is required to ensure consistency with current observational constraints. The resulting gravitational wave signals can explain the recent PTA results for specific parameter space, and for different parameter space fall within the sensitivity range of future detectors such as the Einstein Telescope (ET) and Laser Interferometer Space Antenna (LISA), offering promising opportunities for probing high-energy physics in the early Universe.
Authors
Ahmad Elsayed Moursy
(Cairo University)
Qaisar Shafi