Flat direction condensate instabilities in the MSSM
Flat direction condensate instabilities in the MSSM
复制标题
MSSM 中的平面方向凝结水不稳定性
DOI：
10.1016/s0370-2693(00)00578-5
复制
发表时间：
2000
影响因子：
4.4
通讯作者：
J. McDonald
中科院分区：
文献类型：
--
作者：
K. Enqvist;A. Jokinen;J. McDonald
如果MSSM标量势比φ2平坦，则沿MSSM标量势平坦方向形成的相干振荡标量凝聚体对于空间扰动是不稳定的，从而导致Q球等非拓扑孤子的形成。利用重整化群，我们计算了一系列平坦方向的φ_2势的修正，表明不稳定凝聚体是MSSM的一个普遍特征。当在平坦方向标量上有大量混合的停顿和胶子质量时，在实验上可测试的停顿和胶子质量出现例外。
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 φ2, resulting in the formation of non-topological solitons such as Q-balls. Using the renormalization group we calculate the corrections to the φ2potential 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.