Baryogenesis by Brane-Collision
Mar Bastero-Gil, Edmund J. Copeland, James Gray, Andre Lukas, Michael Plumacher
Abstract
We present a new scenario for baryogenesis in the context of heterotic brane-world models. The baryon asymmetry of the universe is generated at a small-instanton phase transition which is initiated by a moving brane colliding with the observable boundary. We demonstrate, in the context of a simple model, that reasonable values for the baryon asymmetry can be obtained. As a byproduct we find a new class of moving-brane cosmological solutions in the presence of a perfect fluid.
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