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Flat direction condensate instabilities in the MSSM

K. Enqvist·A. Jokinen·J. McDonald
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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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K. Enqvist, A. Jokinen, J. McDonald. 2000-04-06. Flat direction condensate instabilities in the MSSM. https://doi.org/10.1016/s0370-2693(00)00578-5

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