Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2002-04-08
Physics
High Energy Physics
High Energy Physics - Phenomenology
26 pages, 25 eps-figures
Scientific paper
We present analytical and numerical properties of the coherently rotating Affleck-Dine condensate formed along MSSM flat directions with the radiative corrections to the mass terms included. We analyse the pressure $p$ of the condensate, which is known to be negative if the potential grows slower than the field squared. We show that ellipticity of the orbit of the rotating field also affects the pressure. For circularly orbiting field the $p=0$ while the smallest negative value, corresponding to the most unstable configuration, is obtained for a coherently oscillating field. The AD condensate is known to fragment into non-topological solitons called Q-balls. We also study equilibration of Q-ball distribution resulting from the fragmentation of the condensate analytically. We find that equilibration is dependent on the energy-to-charge ratio $x$ of the condensate. We find the allowed range of $x$ numerically and deduce that equilibration is likely to happen.
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