A standard model from the E(8) x E(8) heterotic superstring
A standard model from the E(8) x E(8) heterotic superstring
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E(8) x E(8) 杂优势超弦的标准模型
DOI：
10.1088/1126-6708/2005/06/039
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发表时间：
2005
影响因子：
5.4
通讯作者：
T. Pantev
中科院分区：
文献类型：
--
作者：
V. Braun;Yang;B. Ovrut;T. Pantev
在之前的论文中，我们介绍了杂种优势标准模型并讨论了其基本属性。该真空具有 MSSM 的光谱，带有一对附加的希格斯-希格斯共轭场和少量不带电模量。在本文中，制定了必要的向量束；具体而言，在具有 Z_3 x Z_3 基本群的光滑 Calabi-Yau 三重上具有结构群 SU(N) 的稳定全纯丛。提出了一种计算丛上同调的方法，并用于评估标准模型丛的上同调群。显示了如何确定这些组上的 Z_3 x Z_3 操作。最后，使用“双重态-三重态分裂”的显式方法计算低能粒子能谱。
In a previous paper, we introduced a heterotic standard model and discussed its basic properties. This vacuum has the spectrum of the MSSM with one additional pair of Higgs-Higgs conjugate fields and a small number of uncharged moduli. In this paper, the requisite vector bundles are formulated; specifically, stable, holomorphic bundles with structure group SU(N) on smooth Calabi-Yau threefolds with Z_3 x Z_3 fundamental group. A method for computing bundle cohomology is presented and used to evaluate the cohomology groups of the standard model bundles. It is shown how to determine the Z_3 x Z_3 action on these groups. Finally, using an explicit method of "doublet-triplet splitting", the low-energy particle spectrum is computed.