Implications of gravitational waves for supersymmetric grand unification

被引：12

作者：

Chigusa, So ^{[1
,2
,3
]}

Nakai, Yuichiro ^{[4
,5
]}

Zheng, Jiaming ^{[4
,5
]}

机构：

[1] Univ Calif Berkeley, Berkeley Ctr Theoret Phys, Dept Phys, Berkeley, CA 94720 USA

[2] Lawrence Berkeley Natl Lab, Theoret Phys Grp, Berkeley, CA 94720 USA

[3] KEK, IPNS, KEK Theory Ctr, Tsukuba, Ibaraki 3050801, Japan

[4] Shanghai Jiao Tong Univ, Tsung Dao Lee Inst, 800 Dongchuan Rd, Shanghai 200240, Peoples R China

[5] Shanghai Jiao Tong Univ, Sch Phys & Astron, 800 Dongchuan Rd, Shanghai 200240, Peoples R China

来源：

PHYSICAL REVIEW D | 2021年 / 104卷 / 03期

关键词：

DISCRETE GAUGE-SYMMETRY; PROTON-DECAY; MAGNETIC MONOPOLES; RENORMALIZATION-GROUP; UNIFIED THEORIES; FERMION MASSES; NUCLEON DECAY; CONSERVATION; RADIATION; CATALYSIS;

D O I：

10.1103/PhysRevD.104.035031

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Supersymmetric grand unification based on SO(10) is one of the most attractive paradigms in physics beyond the Standard Model. Inspired by the recent NANOGrav signal, we discuss the implications of detecting a stochastic gravitational wave background emitted by a network of cosmic strings for the SO(10) grand unification. Starting from a minimal model with multiple steps of symmetry breaking, we show that it generally prefers a high intermediate scale above 10(14) GeV that is favored by observable primordial gravitational waves. The observed spectrum can potentially narrow the possible range of the cosmic string scale and restricts the unified couplings and the unification scale by requiring gauge coupling unification. As an indirect consequence of the high cosmic string scale, the monopole abundance places nontrivial constraints on the theory. These are complementary to the proton decay constraints and probe different facets of supersymmetric SO(10) unification theories.

引用

页数：11

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