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Explore the fundamental principles of experimental gravitational wave detection in this comprehensive lecture from the "Hearing beyond the standard model with cosmic sources of Gravitational Waves" program. Delve into the groundbreaking physics behind detecting gravitational waves from merging black holes and neutron stars, while examining various cosmological phenomena that generate these waves across different amplitudes and frequencies. Learn about the detection of Stochastic Gravitational Wave Background (SGWB) signals from multiple sources, including inflation-related tensor perturbations, Primordial Black Holes (PBH) formation, first-order Phase Transitions, and topological defects like cosmic strings and domain walls. Understand the significance of recent SGWB detection evidence from NANO-Grav, InPTA, and other PTA collaborations, and discover how these observations can probe high-scale physics beyond the Standard Model of particle physics and cosmology. Presented by Achamveedu Gopakumar at the International Centre for Theoretical Sciences, this lecture connects fundamental physics concepts with cutting-edge gravitational wave research and detection methodologies.
