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Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Primordial black hole formation during slow reheating after inflation
AU - Carr, Bernard
AU - Dimopoulos, Konstantinos
AU - Owen, Charlotte
AU - Tenkanen, Tommi
PY - 2018/6/26
Y1 - 2018/6/26
N2 - We study the formation of primordial black holes (PBHs) in the early Universe during a period of slow reheating after inflation. We demonstrate how the PBH formation mechanism may change even before the end of the matter-dominated phase and calculate the expected PBH mass function. We find that there is a threshold for the variance of the density contrast, σ_c ≃ 0.05, below which the transition occurs even before reheating, with this having important consequences for the PBH mass function. We also show that there is a maximum cutoff for the PBH mass at around 100 M⊙, below which the subdominant radiation bath affects PBH production, making the scenario particularly interesting for the recent LIGO observations of black hole mergers.
AB - We study the formation of primordial black holes (PBHs) in the early Universe during a period of slow reheating after inflation. We demonstrate how the PBH formation mechanism may change even before the end of the matter-dominated phase and calculate the expected PBH mass function. We find that there is a threshold for the variance of the density contrast, σ_c ≃ 0.05, below which the transition occurs even before reheating, with this having important consequences for the PBH mass function. We also show that there is a maximum cutoff for the PBH mass at around 100 M⊙, below which the subdominant radiation bath affects PBH production, making the scenario particularly interesting for the recent LIGO observations of black hole mergers.
KW - primordial black holes
KW - reheating
U2 - 10.1103/PhysRevD.97.123535
DO - 10.1103/PhysRevD.97.123535
M3 - Journal article
VL - 97
JO - Physical Review D – Particles and Fields
JF - Physical Review D – Particles and Fields
SN - 2470-0010
M1 - 123535
ER -