Reconstruction of power spectrum of primordial curvature perturbations on small scales from primordial black hole binaries scenario of LIGO/VIRGO detection
Reconstruction of power spectrum of primordial curvature perturbations on small scales from primordial black hole binaries scenario of LIGO/VIRGO detection
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DOI：
10.1007/s11433-023-2091-x
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发表时间：
2022-09
期刊：
影响因子：
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通讯作者：
Xinpeng Wang-;Ying-li Zhang;Rampei Kimura;Masahide Yamaguchi
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文献类型：
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作者：
Xinpeng Wang-;Ying-li Zhang;Rampei Kimura;Masahide Yamaguchi
作为LIGO/Virgo探测到的双星黑洞合并事件的候选界，原始黑洞为研究小尺度上的原始曲率扰动提供了有用的工具。利用GWTC-1到GWTC-3星表，在PBH起源于暴涨时期小尺度上的大原始曲率扰动的假设下，我们首次重建了小尺度原始曲率扰动的功率谱。结果表明，原始功率谱的幅值在一定尺度上得到了增强。这可能意味着PBH作为可能的BBH合并候选者的有效性。
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 toon scales. This may imply the validity of PBH as a possible BBH merger candidate.