A New Era of Leptogenesis

TL;DR

This paper explores advanced aspects of leptogenesis, emphasizing flavor effects, quantum influences, and the roles of heavier right-handed neutrinos in generating matter-antimatter asymmetry.

Contribution

It provides a comprehensive analysis of flavor and quantum effects in leptogenesis, extending beyond the simplest models to include heavier neutrino contributions.

Findings

Flavor effects significantly impact asymmetry calculations

Quantum effects can alter leptogenesis outcomes

Heavier right-handed neutrinos play a crucial role in asymmetry generation

Abstract

This thesis is devoted to some forefront issues in the field of leptogenesis. After reviewing the simplest picture where flavor effects are neglected and only the lightest right-handed neutrino contributes to the generation of asymmetry, we discuss in detail the importance of flavor effects, the possible relevance of quantum effects, as well as the role played by the heavier right-handed neutrinos.