Hybrid ?-attractors, primordial black holes and gravitational wave backgrounds

被引：34

作者：

Braglia, Matteo ^{[1
,2
]}

Linde, Andrei ^{[3
,4
]}

Kallosh, Renata ^{[3
,4
]}

Finelli, Fabio ^{[2
,5
]}

机构：

[1] NYU, Ctr Cosmol & Particle Phys, 726 Broadway, New York, NY 10003 USA

[2] INAF OAS Bologna, Via Gobetti 101, I-40129 Bologna, Italy

[3] Stanford Univ, Stanford Inst Theoret Phys, Stanford, CA 94305 USA

[4] Stanford Univ, Dept Phys, Stanford, CA 94305 USA

[5] INFN, Sez Bologna, Via Irnerio 46, I-40126 Bologna, Italy

来源：

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2023年 / 04期

基金：

美国国家科学基金会;

关键词：

inflation; gravitational waves; sources; primordial black holes; TOPOLOGICAL DEFECTS; INITIAL CONDITIONS; INFLATION; FLUCTUATIONS; MONOPOLES; MODEL; BIG;

D O I：

10.1088/1475-7516/2023/04/033

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We investigate the two-stage inflation regime in the theory of hybrid cosmological alpha-attractors. The spectrum of inflationary perturbations is compatible with the latest Planck/BICEP/Keck Array results, thanks to the attractor properties of the model. However, at smaller scales, it may have a very high peak of controllable width and position, leading to a copious production of primordial black holes (PBH) and generation of a stochastic background of gravitational waves (SGWB).

引用

页数：36

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