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Explore a 47-minute lecture on string cosmology and gravitational waves delivered at the International Centre for Theoretical Sciences. Delve into how gravitational waves can be used to investigate string cosmology, presented as part of the "Hearing beyond the standard model with cosmic sources of Gravitational Waves" program. Learn about the experimental detection of gravitational waves from merging black holes and neutron stars, and understand how these waves can probe physics beyond the Standard Model. Examine various sources of gravitational waves including inflation-related tensor perturbations, Primordial Black Holes, first-order Phase Transitions, and topological defects like cosmic strings. Discover the significance of recent findings from NANO-Grav, InPTA and other PTA collaborations regarding Stochastic Gravitational Wave Background (SGWB) detection, and understand their implications for high-scale physics research that may be unreachable through conventional experimental methods.
