Scalar induced gravitational waves from warm inflation

被引：12

作者：

Arya, Richa ^{[1
]}

Mishra, Arvind Kumar ^{[2
]}

机构：

[1] Indian Inst Sci, Dept Phys, Bangalore 560002, India

[2] Indian Inst Sci Educ & Res, Pune 411008, India

来源：

PHYSICS OF THE DARK UNIVERSE | 2022年 / 37卷

关键词：

Warm inflation; Primordial black holes; Scalar induced gravitational waves; BLACK-HOLES; UNIVERSE; EXPANSION; CONSTRAINTS; DYNAMICS; FLATNESS; HORIZON; FUTURE; LIMITS;

D O I：

10.1016/j.dark.2022.101116

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Stochastic gravitational waves can be induced from the primordial curvature perturbations generated during inflation, through scalar-tensor mode coupling at the second order of cosmological perturbation theory. Here we discuss a model of warm inflation in which large curvature perturbations are generated at the small scales because of inflaton dissipation. These overdense perturbations then collapse at later epoch to form primordial black holes, as was studied in our earlier work (Ref. Arya (2020)), and therefore may also act as a source to the second-order tensor perturbations. In this study, we calculate the spectrum of these secondary gravitational waves from our warm inflationary model. We find that our model leads to a generation of scalar induced gravitational waves (SIGW) over a frequency range similar to (1-106) Hz. Further, we discuss the detection possibilities of these SIGWs, taking in account the sensitivity of different ongoing and future gravitational wave experiments.(c) 2022 Elsevier B.V. All rights reserved.

引用

页数：11

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