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Explore fundamental physics concepts in this lecture from the "Hearing beyond the standard model with cosmic sources of Gravitational Waves" program, where Professor Ashoke Sen delves into gravitational wave tails through the lens of soft theorem. Learn about the experimental detection of gravitational waves from merging black holes and neutron stars, and understand how these discoveries connect to physics beyond the Standard Model. Examine various sources of gravitational waves including inflation-related tensor perturbations, Primordial Black Holes (PBH), cosmological first-order Phase Transitions, and topological defects like cosmic strings and domain walls. Discover how the detection of Stochastic Gravitational Wave Background (SGWB) by collaborations like NANO-Grav and InPTA opens new possibilities for probing high-scale physics that may be inaccessible through conventional experiments. Gain insights into the intersection of particle physics, cosmology, and gravitational wave physics in this comprehensive 96-minute presentation from the International Centre for Theoretical Sciences.
