Light U(1)s in heterotic string models

4th Symposium on Prospects in the Physics of Discrete Symmetries

Mehta, V.M.^1

Institute for Theoretical Physics, University of Heidelberg, Philosophenweg 16, Heidelberg

69120, Germany^1

关键词: Embeddings;    Gauge symmetries;    Heterotic strings;    Satisfactory modeling;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/631/1/012078/pdf
DOI  :  10.1088/1742-6596/631/1/012078

来源: IOP

【 摘 要 】

We present a novel string-derived U(1) combination that satisfies necessary properties to survive to low scales. We discuss previous attempts at acquiring such an abelian gauge symmetry from two different string embeddings and the pitfalls associated with them. Finally, we give an example of how a satisfactory model may be constructed within our framework.