An Affleck-Dine Condensate Carried Through a Bounce

The Affleck-Dine mechanism stores baryon number in a coherent scalar condensate that later decays into an asymmetry, and it is famous for producing too much rather than too little. This paper computes the yield for reference parameters and examines what a bounce does to the condensate. For initial amplitude 1e16 GeV and scalar mass 1e3 GeV, oscillation begins at T = 2.67e+10 GeV and the yield is Y_B = 1.88e+01, an overshoot of the observed 8.69e-11 by a factor 2.16e+11. Lowering the amplitude to 1e14 GeV gives 1.88e-03; raising it to 1e18 GeV gives 1.88e+05. A bounce intervening between condensate formation and oscillation divides the stored charge by the bounce entropy factor and can fragment the condensate, so the bounce acts as one of the few natural regulators of the Affleck-Dine overshoot, though an uncontrolled one. Computed from stated assumptions, not measured.