Speaker
Description
The stochastic gravitational wave background (SGWB) provides a unique window into the early universe, offering insights into high-energy physics beyond the reach of conventional cosmological observations. Unlike the cosmic microwave background, which probes the universe after recombination, gravitational waves can propagate freely from the earliest moments after the Big Bang, carrying imprints of inflation, reheating, phase transitions, and other new physics scenarios. In this talk, I will discuss how SGWB measurements can be used to constrain early universe models, with a particular focus on the ongoing LIGO-Virgo-KAGRA observation runs. I will also address the challenges posed by astrophysical foregrounds and the prospects for disentangling primordial signals from astrophysical contributions.
