Rigour and rigidity: Systematics on particle physics D6‐brane models on ℤ2 × ℤ6
Rigour and rigidity: Systematics on particle physics D6‐brane models on ℤ2 × ℤ6
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DOI：
10.1002/prop.201400066
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发表时间：
2014-09
期刊：
影响因子：
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通讯作者：
Jill Ecker;G. Honecker;W. Staessens
中科院分区：
文献类型：
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作者：
Jill Ecker;G. Honecker;W. Staessens
我们在具有离散扭转的有前途的T6/（2 × 6 × Ω）取向折线上系统地寻找具有现象学吸引力的具有相交D膜的弦真空。通过新的对称性，独立背景格的数量从6个减少到2个。USp（2N）和SO（2N）相对于U(N)规范群的出现，以及在伴随和/或对称表示中无物质的D‐膜被分类。允许RR蝌蚪抵消的超对称分数D6 -膜根据继承自六环面的一个复杂结构模量的所有可能值进行了完全分类。然后，我们系统地研究了两个D6膜成对相交处的三个粒子世代的条件。T6/（2 × 6 × Ω）上的全局SU(5) GUT模型由于要求三代且在15表示中没有外来物质而被排除。发现了两个具有少量向量样奇异物质的全局Pati - Salam模型原型。
We launch a systematic search for phenomenologically appealing string vacua with intersecting D‐branes on the promising T6/(ℤ2 × ℤ6 × Ω ℛ) orientifold with discrete torsion. The number of independent background lattices is reduced from six to two by new symmetries. The occurrence of USp(2N) and SO(2N) versus U(N) gauge groups is classified as well as D‐branes without matter in the adjoint and/or symmetric representation. Supersymmetric fractional D6‐branes allowing for RR tadpole cancellation are fully classified in terms of all possible values of the one complex structure modulus inherited from the underlying six‐torus. We then systematically investigate the conditions for three particle generations at pairwise intersections of two D6‐branes. Global SU(5) GUT models on T6/(ℤ2 × ℤ6 × Ω ℛ) are excluded by demanding three generations and no exotic matter in the 15 representation. Two prototypes of global Pati‐Salam models with a mild amount of vector‐like exotic matter are found.