2008

Inhomogeneous baryogenesis, cosmic antimatter, and dark matter

Dolgov, A. D., Kawasaki, M., Kevlishvili, N.

Understand

A model of inhomogeneous baryogenesis based on the Affleck and Dine mechanism is described.

A simple coupling of the scalar baryon field to the inflaton allows for formation of astronomically significant bubbles with a large baryon (or antibaryon) asymmetry.
During the farther evolution these domains form compact stellar-like objects, or lower density clouds, or primordial black holes of different size.
According to the scenario, such high baryonic number objects occupy relatively small fraction of space but despite that they may significantly contribute to the cosmological mass density.

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