Primordial monopoles, black holes and gravitational waves

被引：4

作者：

Moursy, Ahmad ^{[1
]}

Shafi, Qaisar ^{[2
]}

机构：

[1] Cairo Univ, Fac Comp & Artificial Intelligence, Dept Basic Sci, Giza 12613, Egypt

[2] Univ Delaware, Bartol Res Inst, Dept Phys & Astron, Newark, DE 19716 USA

来源：

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2024年 / 08期

关键词：

Cosmic strings; domain walls; monopoles; inflation; particle physics- cosmology connection; primordial black holes; MAGNETIC MONOPOLES; BARYOGENESIS; INFLATION; SPECTRUM; ORIGIN; NUMBER; MATTER; MASS;

D O I：

10.1088/1475-7516/2024/08/064

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We show how topologically stable superheavy magnetic monopoles and primordial black holes can be generated at observable levels by the waterfall field in hybrid inflation models based on grand unified theories. In SU(5) x U(1)chi chi grand unification, the monopole mass is of order 4 x 1017 17 GeV, and it carries a single unit (2 pi/e) pi/e ) of Dirac magnetic charge as well as screened color magnetic charge. The monopole density is partially diluted to an observable value, and accompanied with the production of primordial black holes with mass of order 1017-1019 17 -10 19 g which may make up the entire dark matter in the universe. The tensor to scalar ratio r is predicted to be of order 10-5-10-4 - 5 -10 - 4 which should be testable in the next generation of CMB experiments such as CMB-S4 and LiteBIRD. The gravitational wave spectrum generated during the waterfall transition is also presented. The observed baryon asymmetry can be explained via leptogenesis.

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页数：26

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