Primary and Scalar-induced Secondary Gravitational Waves from Inflation - Lecture 2

Explore fundamental concepts of gravitational waves in this advanced physics lecture focusing on primary and scalar-induced secondary gravitational waves. Part of the "Hearing beyond the standard model with cosmic sources of Gravitational Waves" program, delve into the theoretical framework of gravitational wave detection and its implications for physics beyond the Standard Model. Learn about tensor perturbations during inflation, reheating and preheating processes, and their role in generating detectable Stochastic Gravitational Wave Background (SGWB) signals. Examine the relationship between Primordial Black Holes (PBH), induced gravitational waves, and non-gaussianities, while understanding the significance of cosmological first-order Phase Transitions and their effects on gravitational wave production. Discover how the detection of these gravitational waves serves as a crucial tool for probing high-scale physics phenomena that may be unreachable through conventional terrestrial or astroparticle physics experiments.