Particle and Astro-Particle Physics Seminars

Affleck-Dine Inflation

by Jim Cline

4/3-006 - TH Conference Room (CERN)

4/3-006 - TH Conference Room


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The Affleck-Dine mechanism is one of oldest and simplest ways of producing the baryon asymmetry, through the evolution of a complex scalar field that carries baryon number.  I will show that the original nonsupersymmetric model, with a renormalizable potential, can also give successful inflation, when supplemented by a nonminimal coupling to gravity.  The baryon asymmetry is generated mostly during inflation rather than afterwards.  Observable tensor perturbations can be produced, as well as baryon isocurvature fluctuations.  A simple extension of the model with color triplet scalars, allowing for perturbative reheating, makes it fully predictive, with no ambiguity in the horizon-crossing epoch.