RUNNING GAUGE COUPLINGS AND THRESHOLDS IN THE TYPE-II SUPERSTRING

被引：17

作者：

DOLAN, L

LIU, JT

机构：

[1] Institute of Field Physics, Department of Physics and Astronomy, University of North Carolina, Chapel Hill

来源：

NUCLEAR PHYSICS B | 1992年 / 387卷 / 01期

关键词：

D O I：

10.1016/0550-3213(92)90047-F

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

A distinctive feature of string unification is the possibility of unification by a non-simply-laced group. This occurs most naturally in four-dimensional type-II string models where the gauge symmetry is realized by Kac-Moody algebras at different levels. We investigate the running coupling constants and the one-loop thresholds for such general models. As a specific case, we examine an SU(3) x U(1) x U(1) model and find that the threshold corrections lead to a small 6% increase in the unification scale.

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页码：86 / 96

页数：11

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