Baryogenesis by Brane-Collision
Mar Bastero-Gil, Edmund J. Copeland, James Gray, Andre Lukas, Michael, Plumacher
TL;DR
This paper proposes a novel baryogenesis mechanism in heterotic brane-world models where a moving brane collision triggers asymmetry, and introduces new moving-brane cosmological solutions with a perfect fluid.
Contribution
It introduces a new baryogenesis scenario involving brane collisions and presents new cosmological solutions in brane-world models.
Findings
Reasonable baryon asymmetry values achieved.
New class of moving-brane cosmological solutions found.
Baryogenesis linked to small-instanton phase transition.
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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