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Explore a 46-minute lecture from the International Centre for Theoretical Sciences that delves into preheating phenomena and gravitational wave generation through geometrical destabilization. Learn about the intersection of cosmological physics and gravitational waves as part of a comprehensive program on cosmic sources of gravitational waves beyond the standard model. Understand how gravitational waves can be generated from various cosmological events including inflation, reheating, preheating, and phase transitions. Discover the significance of Stochastic Gravitational Wave Background (SGWB) signals, Primordial Black Holes (PBH), and their role in probing high-scale physics that may be inaccessible through conventional experimental methods. Gain insights into recent developments from NANO-Grav, InPTA, and other PTA collaborations regarding the first evidence of SGWB detection based on 15 years of observational data.
