Type 0 ℤ2 × ℤ2 heterotic string orbifolds and misaligned supersymmetry
Type 0 ℤ2 × ℤ2 heterotic string orbifolds and misaligned supersymmetry
复制标题
类型 0 ℤ2 × ℤ2 杂优势弦轨道折叠和错位超对称性
DOI：
10.1142/s0217751x21501748
复制
发表时间：
2020
影响因子：
1.6
通讯作者：
Benjamin Percival
中科院分区：
文献类型：
--
作者：
A. Faraggi;Viktor G. Matyas;Benjamin Percival
[Formula：See Text]杂化弦线奥比霍尔德产生了大量现象学的三代模型，并作为一个试验场，探索如何将粒子物理的标准模型纳入量子引力理论。在这篇文章中，我们研究了这类字符串紧化中类型0模型的存在性。我们证明了0型[公式：参见文本]异类字符串的存在性，并证明了当实施0型限制时，GGSO投影系数空间中存在很大程度的冗余度。我们在几个构式中探索了这种构型的存在。第一个基本上对应于先验的[公式：参见文本]离散的GGSO选择中的唯一配置。通过对配分函数的相应分析，我们用解析的方法证明了这种唯一性。在[公式：见文本]-模型和[公式：见文本]-模型中执行更广泛的分类，其中第一类对应于速生十维杂化弦真空的紧凑，而第二类对应于十维非速生[公式：见文本]的紧凑。我们证明了这两种情况下的0型模型在模空间的自由费米子点上都含有物理快子。因此，这些真空必然是不稳定的，但可能有助于探索宇宙学场景中的弦动力学。我们分析了弦的单环振幅的性质。当然，由于快子状态的存在，这些都是发散的。我们发现，一旦用手移去了快子态，其振幅就是有限的，并且呈现出一种失准的超对称性。
The [Formula: see text] heterotic string orbifold yielded a large space of phenomenological three generation models and serves as a testing ground to explore how the Standard Model of particle physics may be incorporated in a theory of quantum gravity. In this paper, we explore the existence of type 0 models in this class of string compactifications. We demonstrate the existence of type 0 [Formula: see text] heterotic string orbifolds, and show that there exist a large degree of redundancy in the space of GGSO projection coefficients when the type 0 restrictions are implemented. We explore the existence of such configurations in several constructions. The first correspond to essentially a unique configuration out of a priori [Formula: see text] discrete GGSO choices. We demonstrate this uniqueness analytically, as well as by the corresponding analysis of the partition function. A wider classification is performed in [Formula: see text]-models and [Formula: see text]-models, where the first class correspond to compactifications of a tachyonic ten-dimensional heterotic string vacuum, whereas the second correspond to compactifications of the ten-dimensional nontachyonic [Formula: see text]. We show that the type 0 models in both cases contain physical tachyons at the free fermionic point in the moduli space. These vacua are therefore necessarily unstable, but may be instrumental in exploring the string dynamics in cosmological scenarios. We analyze the properties of the string one-loop amplitude. Naturally, these are divergent due to the existence of tachyonic states. We show that once the tachyonic states are removed by hand the amplitudes are finite and exhibit a form of misaligned supersymmetry.
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
DOI：
10.1140/epjc/s10052-016-4056-2
发表时间：
2016
期刊：
The European Physical Journal C
影响因子：
--
作者：
Ashfaque J
通讯作者：
Ashfaque J