Coupled dynamics of multiple flat directions in Affleck–Dine baryogenesis

Analyze charge generation and perturbation production in configurations containing multiple MSSM flat directions that completely break the continuous gauge group, including the effects of their coupled evolution on the timing and efficiency of charge generation and on the resulting isocurvature perturbations.

Background

The paper classifies pairs of MSSM flat directions whose simultaneous condensates can completely break the continuous gauge group while satisfying the renormalizable F- and D-flatness conditions. Its quantitative Affleck–Dine analysis, however, is restricted to a single-field limit. For multiple flat directions, interactions between the condensates may alter when and how efficiently charge is generated and may change the resulting isocurvature perturbations. A dedicated treatment is therefore identified as a future research problem needed to extend the connection between the Festina Lente bound and Affleck–Dine baryogenesis beyond the single-field approximation.