文献类型：期刊文献

英文题名：E-6 GUT through effects of dimension-5 operators

作者：Huang, Chao-Shang[1];Li, Wen-Jun[2];Wu, Xiao-Hong[3]

机构：[1]Chinese Acad Sci, Inst Theoret Phys, Key Lab Theoret Phys, Beijing 100190, Peoples R China;[2]Henan Normal Univ, Coll Phys & Mat Sci, Inst Theoret Phys, Xinxiang 453007, Peoples R China;[3]East China Univ Sci & Technol, Sch Sci, Inst Modern Phys, Meilong Rd 130, Shanghai 200237, Peoples R China

年份：2017

卷号：1

期号：5

外文期刊名：JOURNAL OF PHYSICS COMMUNICATIONS

收录：EI(收录号：20200022961);WOS:【ESCI(收录号:WOS:000434986300027)】；

基金：This research was supported in part by the Natural Science Foundation of China under grant numbers 11375248, 11647601, 11135009 and 11005033.

语种：英文

外文关键词：grand unification theory; E6 group; gauge coupling unfication

摘要：In the effective field theory framework, quantum gravity can induce effective dimension-5 operators, which have important impacts on grand unified theories. Interestingly, one of main effects is the modification of the usual gauge coupling unification condition. We investigate the gauge coupling unification in E-6 under modified gauge coupling unification condition at scales M-X in the presence of one or more dimension-5 operators. It is shown that non-supersymmetric models of E-6 unification can be obtained and can easily satisfy the constraints from the proton lifetime. For constructing these models, we consider several maximal subgroups H = SO(10) x U(1), H = SU(3) x SU(3) x SU (3), and H = SU(2) x SU(6) of E-6 and the usual breaking chains for a specific maximal subgroup, and derive all of the Clebsch-Gordan coefficients Phi((r))(s,z) associated with E-6 breaking to the standard model, which are given in appendix A.