E6 GUT through effects of dimension-5 operators
E6 GUT through effects of dimension-5 operators
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DOI：
10.1088/2399-6528/aa98d1
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发表时间：
2017-05
影响因子：
1.2
通讯作者：
Chao-shang Huang;Wenjun Li;Xiao-Hong Wu
中科院分区：
文献类型：
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作者：
Chao-shang Huang;Wenjun Li;Xiao-Hong Wu
在有效场论框架下，量子引力可以诱导出有效的5维算子，这对大统一理论有着重要的影响。有趣的是，其中一个主要影响是通常的规范耦合统一条件的改变。在一个或多个5维算子存在的情况下，在修正的尺度耦合统一条件下，研究了E6中的尺度耦合统一。结果表明，可以得到E6统一的非超对称模型，并且可以很容易地满足质子寿命的约束。为了构造这些模型，我们考虑了E6的几个极大子群H = SO（10） × U(1), H = SU(3) × SU(3)和H = SU(2) × SU(6)以及特定极大子群的常用断裂链，并导出了E6断裂的所有Clebsch-Gordan系数Φ s， z (r)，这些系数在附录中给出。
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 E6 under modified gauge coupling unification condition at scales MX in the presence of one or more dimension-5 operators. It is shown that non-supersymmetric models of E6 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) × U(1), H = SU(3) × SU(3) × SU(3), and H = SU(2) × SU(6) of E6 and the usual breaking chains for a specific maximal subgroup, and derive all of the Clebsch–Gordan coefficients Φ s , z ( r ) associated with E6 breaking to the standard model, which are given in appendix .