Why is there more matter than antimatter? Calculational methods for leptogenesis and electroweak baryogenesis

Understand

We review the production of the matter-antimatter asymmetry in the early Universe, that is baryogenesis, in out-of-equlibrium conditions induced by decays of heavy particles or by the presence of phase boundaries.

• The most prominent examples are given by leptogenesis and electroweak baryogenesis, respectively.
• For both cases, we derive the equations that govern the production of the asymmetries.
• We first use intuitive arguments based on classical fluid equations in combination with quantum-field-theoretical effects of CP-violation.