Journal
PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS
Volume 2019, Issue 10, Pages -Publisher
OXFORD UNIV PRESS INC
DOI: 10.1093/ptep/ptz105
Keywords
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Funding
- MEXT KAKENHI [15H05888, 18H04356]
- Japan Society for the Promotion of Science (JSPS) [15K17632]
- MEXT [15H05888, 17H06359, 18H04338, 19K03864]
- Grants-in-Aid for Scientific Research [18H04338, 18H04356, 19K03864] Funding Source: KAKEN
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We formulate the two-point correlation function of primordial black holes (PBHs) at their formation time, based on the functional integration approach which has often been used in the context of halo clustering. We find that PBH clustering on super-Hubble scales could never be induced in the case where the initial primordial fluctuations are Gaussian, while it can be enhanced by the so-called local-type trispectrum (four-point correlation function) of the primordial curvature perturbations.
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