Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1999-08-10
Nucl.Phys. B570 (2000) 407-422
Physics
High Energy Physics
High Energy Physics - Phenomenology
21 pages LaTeX, 11 figures
Scientific paper
10.1016/S0550-3213(99)00776-2
In the MSSM, cosmological scalar field condensates formed along flat directions of the scalar potential (Affleck-Dine condensates) are typically unstable with respect to formation of Q-balls, a type of non-topological soliton. We consider the dynamical evolution of the Affleck-Dine condensate in the MSSM. We discuss the creation and linear growth, in F- and D-term inflation models, of the quantum seed perturbations which in the non-linear regime catalyse the collapse of the condensate to non-topological soliton lumps. We study numerically the evolution of the collapsing condensate lumps and show that the solitons initially formed are not in general Q-balls, but Q-axitons, a pseudo-breather which can have very different properties from Q-balls of the same charge. We calculate the energy and charge radiated from a spherically symmetric condensate lump as it evolves into a Q-axiton. We also discuss the implications for baryogenesis and dark matter.
Enqvist Kari
McDonald Janece
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