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Explore a 47-minute lecture from the International Centre for Theoretical Sciences that delves into Domain Wall Networks and their relationship to gravitational waves, primordial black holes, and cosmic phenomena. Learn about the groundbreaking experimental detection of gravitational waves from merging black holes and neutron stars, and understand how these waves can probe physics beyond the Standard Model. Discover various sources of gravitational waves including inflation-related tensor perturbations, primordial black hole formation, first-order phase transitions, and topological defects like cosmic strings and domain walls. Examine recent findings from NANO-Grav, InPTA, and other PTA collaborations regarding the first evidence of Stochastic Gravitational Wave Background detection. Part of a comprehensive program on "Hearing beyond the standard model with cosmic sources of Gravitational Waves," this lecture connects fundamental physics concepts with cutting-edge gravitational wave research and its implications for understanding high-scale physics phenomena.
