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Observable isocurvature fluctuations from the Affleck-Dine condensate

Research output: Contribution to Journal/MagazineJournal articlepeer-review

<mark>Journal publication date</mark>27/09/1999
<mark>Journal</mark>Physical review letters
Issue number13
Number of pages4
Pages (from-to)2510-2513
Publication StatusPublished
<mark>Original language</mark>English


In D-term inflation models, Affleck-Dine baryogenesis produces baryonic isocurvature fluctuations. In most cases the Affleck-Dine condensate is unstable with respect to collapse to B-balls, which can transform the baryon number perturbations into perturbations in the number of dark matter neutralinos. The requirement that the deviation of the adiabatic perturbations from scale invariance is not too large imposes a lower bound on the magnitude of the isocurvature fluctuations. In general this is larger than about 10(-4) times the adiabatic perturbation, and, for the particular case of late decaying B-balls, larger than about 10(-2) times the adiabatic perturbation, which should be observable by MAP and PLANCK.