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Cai, Rong-Gen; Wang, Shao-Jiang
Mass bound for primordial black hole from trans-Planckian censorship conjecture
Source PublicationPHYSICAL REVIEW D
AbstractThe recently proposed trans-Planckian censorship conjecture (TCC) imposes a strong constraint on the inflationary Hubble scale, of which the upper bound could be largely relaxed by considering a noninstantaneous reheating history. In this paper we will show that, if the primordial black holes (PBHs) are formed at reentry in the radiation-dominated era from the enhanced curvature perturbations at small scales, the TCC would impose a lower bound on the PBH mass M-PBH > gamma(H-end = 10(9) GeV)(2) M-circle dot regardless of the details for reheating history, where. is the collapse efficiency factor and Hend is the Hubble scale at the end of inflation. In particular, the current open window for PBHs to make up all the cold dark matter could be totally ruled out if the inflationary Hubble scale is larger than 10 TeV. For the case of PBHs formed in an early matter-dominated era, an upper mass bound is obtained.
Cooperation Status国际
Subject AreaAstronomy & Astrophysics ; Physics
MOST Discipline CatalogueAstronomy & Astrophysics ; Physics, Particles & Fields
Indexed BySCIE
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Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China
2.Tufts Univ, Tufts Inst Cosmol, Dept Phys & Astron, 574 Boston Ave, Medford, MA 02155 USA
Recommended Citation
GB/T 7714
Cai, Rong-Gen,Wang, Shao-Jiang. Mass bound for primordial black hole from trans-Planckian censorship conjecture[J]. PHYSICAL REVIEW D,2020,101(4):43508.
APA Cai, Rong-Gen,&Wang, Shao-Jiang.(2020).Mass bound for primordial black hole from trans-Planckian censorship conjecture.PHYSICAL REVIEW D,101(4),43508.
MLA Cai, Rong-Gen,et al."Mass bound for primordial black hole from trans-Planckian censorship conjecture".PHYSICAL REVIEW D 101.4(2020):43508.
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