Fayet–Iliopoulos D-term in non-supersymmetric heterotic string orbifolds

Fayet–Iliopoulos D-term in non-supersymmetric heterotic string orbifolds
复制标题

非超对称杂优势弦环折叠中的 Fayet–Iliopoulos D 项

DOI:
10.1140/epjc/s10052-023-12059-9
复制
发表时间:
2023
期刊:
The European Physical Journal C
影响因子:
--
通讯作者:
Benjamin Percival
Benjamin Percival
中科院分区:
--
文献类型:
--
作者:
Alonzo R. Diaz Avalos;A. Faraggi;Viktor G. Matyas;Benjamin Percival

文献摘要

参考文献

相似文献

Fayet–Iliopoulos D 项是 $${\mathcal {N}}=1$$ N = 1 弦真空中的一个共同特征,其中包含反常的 U (1) 规范对称性,并且源自弦微扰理论中的单环图。在弦真空中也会生成相同的图,其中超对称性直接在弦尺度上被破坏,要么通过自发的谢尔克-施瓦茨破缺,在这种情况下,引力质量由谢尔克-施瓦茨机制中使用的圆的半径决定,要么通过 GSO 投影的显式超对称破缺。我们分析了非超对称弦真空中所产生的 Fayet-Illiopoulos D 项及其对真空能量的贡献。显式无快子弦导出模型中的数值估计表明,潜在的 D 项贡献可能会将真空能量提升到正值。
The Fayet–Iliopoulos D -term is a common feature in $${\mathcal {N}}=1$$ N = 1 string vacua that contain an anomalous U (1) gauge symmetry, and arises from a one-loop diagram in string perturbation theory. The same diagram is generated in string vacua in which supersymmetry is broken directly at the string scale, either via spontaneous Scherk–Schwarz breaking, in which case the gravitino mass is determined by the radius of the circle used in the Scherk–Schwarz mechanism, or via explicit supersymmetry breaking by the GSO projections. We analyse the resulting would-be Fayet–Illiopoulos D -term in the non-supersymmetric string vacua and its contribution to the vacuum energy. A numerical estimate in an explicit tachyon-free string-derived model suggests that the would-be D -term contribution may uplift the vacuum energy to a positive value.
疏散准现实异种异质弦真空
DOI: 10.1016/j.physletb.2009.12.033
发表时间: 2010
期刊: Physics Letters B
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