Reconstruction of power spectrum of primordial curvature perturbations on small scales from primordial black hole binaries scenario of LIGO/VIRGO detection

被引：32
|
作者：
Wang, Xinpeng [1 ]
Zhang, Ying-li [1 ,2 ,3 ,4 ]
Kimura, Rampei [5 ]
Yamaguchi, Masahide [6 ]
机构：
[1] Tongji Univ, Sch Phys Sci & Engn, Shanghai 200092, Peoples R China
[2] Tongji Univ, Inst Adv Study, Shanghai 200092, Peoples R China
[3] Kavli Inst Phys & Math Universe WPI, Chiba 2778583, Japan
[4] Yangzhou Univ, Ctr Gravitat & Cosmol, Yangzhou 225009, Peoples R China
[5] Waseda Univ, Waseda Inst Adv Study, Tokyo 1698050, Japan
[6] Tokyo Inst Technol, Dept Phys, Tokyo 1528551, Japan
来源：
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY | 2023年 / 66卷 / 06期
关键词：
primordial black hole; primordial curvature perturbation; gravitational wave; inflation;
D O I：
10.1007/s11433-023-2091-x
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
As a candidate bound for the Binary Black Hole (BBH) merger events detected by LIGO/Virgo, Primordial Black Holes (PBHs) provide a useful tool to investigate the primordial curvature perturbations on small scales. Using the GWTC-1 to GWTC-3 catalogs, under the scenario that PBHs originate from large primordial curvature perturbations on small scales during inflationary epoch, we for the first time reconstruct the power spectrum of primordial curvature perturbations on small scales. It is found that the value of the amplitude of the primordial power spectrum is enhanced to O 10(-2) on scales O (1) pc. This may imply the validity of PBH as a possible BBH merger candidate.
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页数：7
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