Heterotic line bundle models on elliptically fibered Calabi-Yau three-folds

Heterotic line bundle models on elliptically fibered Calabi-Yau three-folds
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椭圆纤维 Calabi-Yau 三折上的杂种线束模型

DOI:
10.1007/jhep04(2018)087
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发表时间:
2018
影响因子:
5.4
通讯作者:
Braun A
Braun A
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Braun A

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我们分析了弱Fano基上椭圆纤维Calabi-Yau三折叠的杂优线丛模型。为了便于威尔逊线断裂到标准模型群,我们重点研究了具有第二部分和自由作用对合的椭圆纤维三折叠。具体地说,我们认为环面弱Fano曲面是基本流形,并确定了六个具有所需性质的这样的流形。发展了在这些空间上构造线丛模型所需的数学工具,包括计算线丛上同调。一次计算机扫描可以得到400多个线束模型和一个SU(5)肠群,这些模型具有合适的家族数量,在取ℤ2商后可能会下降到类似标准的模型。这些模型的一个共同且令人惊讶的特征是存在大量的类矢量态。
We analyze heterotic line bundle models on elliptically fibered Calabi-Yau three-folds over weak Fano bases. In order to facilitate Wilson line breaking to the standard model group, we focus on elliptically fibered three-folds with a second section and a freely-acting involution. Specifically, we consider toric weak Fano surfaces as base manifolds and identify six such manifolds with the required properties. The requisite mathematical tools for the construction of line bundle models on these spaces, including the calculation of line bundle cohomology, are developed. A computer scan leads to more than 400 line bundle models with the right number of families and an SU (5) GUT group which could descend to standard-like models after taking the ℤ 2 quotient. A common and surprising feature of these models is the presence of a large number of vector-like states.
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