期刊
PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS
卷 2019, 期 10, 页码 -出版社
OXFORD UNIV PRESS INC
DOI: 10.1093/ptep/ptz105
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资金
- 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
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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