Matter-Antimatter Asymmetry in the Universe and an Arrow for Time

Abstract

An overview is given of theoretical attempts to explain the matter-antimatter asymmetry in the Universe, emphasizing particularly leptogenesis and the Affleck-Dine mechanism.

Comments: 20 pages, no figures. Invited talk given at the World Summit on Physics Beyond the Standard Model, Galapagos Islands, Ecuador, June 22-25, 2006