Clustering of primordial black holes with non-Gaussian initial fluctuations
Cosmology and Nongalactic Astrophysics
2019-11-11 v2 General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
High Energy Physics - Theory
Abstract
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.
Keywords
Cite
@article{arxiv.1906.04958,
title = {Clustering of primordial black holes with non-Gaussian initial fluctuations},
author = {Teruaki Suyama and Shuichiro Yokoyama},
journal= {arXiv preprint arXiv:1906.04958},
year = {2019}
}
Comments
16 pages, published version