Model for cosmological formation of superheavy Q-balls from a broken scale invariance potential that may explain dark matter or early structure formation.
Flat direction condensate instabilities in the MSSM
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abstract
Coherently oscillating scalar condensates formed along flat directions of the MSSM scalar potential are unstable with respect to spatial perturbations if the potential is flatter than phi^2, resulting in the formation of non-topological solitons such as Q-balls. Using renormalization group we calculate the corrections to the phi^2 potential for a range of flat directions and show that unstable condensates are a generic feature of the MSSM. Exceptions arise for an experimentally testable range of stop and gluino masses when there are large admixtures of stops in the flat direction scalar.
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Superheavy Q-Balls and Cosmology
Model for cosmological formation of superheavy Q-balls from a broken scale invariance potential that may explain dark matter or early structure formation.