Investigation of quasi-realistic heterotic string models with reduced Higgs spectrum
Investigation of quasi-realistic heterotic string models with reduced Higgs spectrum
复制标题
具有简化希格斯谱的准真实杂种优势弦模型的研究
DOI：
--
复制
发表时间：
2011
期刊：
影响因子：
--
通讯作者：
T. Renner
中科院分区：
文献类型：
--
作者：
G. Cleaver;A. Faraggi;J. Greenwald;D. Moore;K. Pechan;E. Remkus;T. Renner
自由费米子公式中的准真实杂变弦模型通常包含导致超对称性破缺的异常 U(1)。通过在真空上施加 F 和 D 平坦度来恢复超对称性。已经提出了一个三代自由费米子标准模型，该模型不允许严格的 F 和 D 平坦方向（Cleaver 等人，在 Phys. Rev. D 78, 046009, 2008），并且有人认为该模型中的所有模量都是固定的。该模型的特殊性质是通过相对于与压缩维度相关的内部费米子的对称和不对称内部维度边界条件的组合来减少未扭曲的希格斯谱。这种减少是在不需要或不存在平面方向的情况下发生的。在本文中，我们将具有简化希格斯谱的自由费米子模型的分析扩展到具有相同内部空间但具有修改规范组的模型：SO(10) 或翻转的 SU(5) 子组。我们证明本文研究的所有模型都承认严格的平面方向。目前，唯一不接受严格平面方向的模型示例是 Cleaver 等人的标准模型。 （物理修订版 D 78, 046009, 2008）。我们评论了自由费米子模型中平坦方向和约化希格斯粒子之间的关系，以及模量稳定性和模型现象学之间可能的联系。
Quasi-realistic heterotic-string models in the free fermionic formulation typically contain an anomalous U(1) that leads to supersymmetry breaking. Supersymmetry is restored by imposing F- and D-flatness on the vacuum. A three generation free fermionic standard-like model which did not admit stringent F- and D-flat directions has been presented (Cleaver et al. in Phys. Rev. D 78, 046009, 2008) and it was argued that all the moduli in that model were fixed. The particular property of that model was the reduction of the untwisted Higgs spectrum by a combination of symmetric and asymmetric internal dimension boundary conditions with respect to the internal fermions associated with the compactified dimensions. This reduction occurred without the need or presence of flat directions. In this paper we extend the analysis of free fermionic models with reduced Higgs spectrum to models with the same internal space but with modified gauge groups: SO(10) or flipped SU(5) subgroup. We show that all the models studied in this paper do admit stringent flat directions. Currently, the only examples of models that do not admit stringent flat directions are the standard-like models of Cleaver et al. (Phys. Rev. D 78, 046009, 2008). We comment on the relationship between flat directions and reduced Higgs in free fermionic models as well as the possible connection between moduli stabilization and model phenomenology.
疏散准现实异种异质弦真空
影响因子：
4.4
作者：
Assel B
通讯作者：
Assel B