Grand Unification and Enhanced Quantum Gravitational Effects

被引：47

作者：

Calmet, Xavier ^{[1
]}

Hsu, Stephen D. H. ^{[2
]}

Reeb, David ^{[2
]}

机构：

[1] Catholic Univ Louvain, Ctr Particle Phys & Phenomenol, B-1348 Louvain, Belgium

[2] Univ Oregon, Inst Theoret Sci, Eugene, OR 97403 USA

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 101卷 / 17期

关键词：

D O I：

10.1103/PhysRevLett.101.171802

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In grand unified theories with large numbers of fields, renormalization effects significantly modify the scale at which quantum gravity becomes strong. This in turn can modify the boundary conditions for coupling constant unification, if higher dimensional operators induced by gravity are taken into consideration. We show that the generic size of, and the uncertainty in, these effects from gravity can be larger than the two-loop corrections typically considered in renormalization group analyses of unification. In some cases, gravitational effects of modest size can render unification impossible.

引用

页数：4

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