Skip to main content

Research Repository

Advanced Search

Pitfalls of a power-law parametrization of the primordial power spectrum for primordial black hole formation

Green, Anne M.

Authors

ANNE GREEN anne.green@nottingham.ac.uk
Professor of Physics



Abstract

Primordial Black Holes (PBHs) can form in the radiation dominated early Universe from the collapse of large density perturbations produced by inflation. A power-law parameterisation of the primordial power spectrum is often used to extrapolate from cosmological scales, where the amplitude of the perturbations is well-measured by Cosmic Microwave Background and Large Scale Structure observations, down to the small scales on which PBHs may form. We show that this typically leads to large errors in the amplitude of the fluctuations on small scales, and hence extremely inaccurate calculations of the abundance of PBHs formed.

Citation

Green, A. M. (2018). Pitfalls of a power-law parametrization of the primordial power spectrum for primordial black hole formation. Physical Review D, 98(2), https://doi.org/10.1103/PhysRevD.98.023529

Journal Article Type Article
Acceptance Date Jun 27, 2018
Publication Date Jul 24, 2018
Deposit Date Jul 25, 2018
Publicly Available Date Jul 25, 2018
Journal Physical Review D
Print ISSN 2470-0010
Electronic ISSN 2470-0029
Publisher American Physical Society
Peer Reviewed Peer Reviewed
Volume 98
Issue 2
DOI https://doi.org/10.1103/PhysRevD.98.023529
Public URL http://eprints.nottingham.ac.uk/id/eprint/53144
Publisher URL https://journals.aps.org/prd/abstract/10.1103/PhysRevD.98.023529
Copyright Statement Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf

Files


PBHPLPSrev.pdf (362 Kb)
PDF

Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf





You might also like



Downloadable Citations