Parity violation in the early universe and creation of matter

A parity-violating cosmic background can trigger quantum anomalies that break the conformal symmetry of massless fermions, enabling their efficient production in the primordial universe. These anomaly-driven processes operate without requiring CP-violating phases in the neutrino sector, offering an alternative pathway to generating the matter–antimatter imbalance. Taken together, these ideas point to a compelling possibility: the cosmic matter–antimatter asymmetry may ultimately originate from a primordial violation of parity itself. This connection between a fundamental discrete symmetry and the emergence of cosmic structure provides a new avenue for physics beyond the Standard Model and motivates further theoretical and observational exploration. Youtube link