Matter-Antimatter Asymmetry and Gravitational Anomalies in String-Inspired Cosmology

Watch a fascinating physics colloquium lecture where Professor Nikolaos Mavromatos from the National Technical University of Athens and King's College London explores the fundamental question of matter-antimatter asymmetry in the Universe. Delve into an alternative explanation for our existence based on string theory-inspired cosmologies, focusing on quantum gravitational anomalies in the early Universe. Learn about how chiral gravitational waves and axion fields could provide a new understanding of matter dominance over antimatter, challenging conventional Sakharov conditions. Explore how this theoretical framework not only explains cosmic matter-antimatter asymmetry but also potentially addresses current cosmological tensions like the Hubble constant and growth-of-structure discrepancies. Discover the intersection of string theory, quantum gravity, and cosmological evolution in this comprehensive examination of a novel approach to understanding our universe's fundamental composition.