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:
影响因子:
--
通讯作者:
Benjamin Percival
中科院分区:
文献类型:
--
作者:
Alonzo R. Diaz Avalos;A. Faraggi;Viktor G. Matyas;Benjamin Percival
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.
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