skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: PBH dark matter from axion inflation

Abstract

Protected by an approximate shift symmetry, axions are well motivated candidates for driving cosmic inflation. Their generic coupling to the Chern-Simons term of any gauge theory gives rise to a wide range of potentially observable signatures, including equilateral non-Gaussianites in the CMB, chiral gravitational waves in the range of direct gravitational wave detectors and primordial black holes (PBHs). In this paper we revisit these predictions for axion inflation models non-minimally coupled to gravity. Contrary to the case of minimally coupled models which typically predict scale-invariant mass distributions for the generated PBHs at small scales, we demonstrate how broadly peaked PBH spectra naturally arises in this setup. For specific parameter values, all of dark matter can be accounted for by PBHs.

Authors:
; ;  [1];  [2]
  1. AstroParticule et Cosmologie, Université Paris Diderot, CNRS, CEA, Observatoire de Paris, Sorbonne Paris Cité, 10, rue Alice Domon et Léonie Duquet, F-75205 Paris Cedex 13 (France)
  2. Paris Centre for Cosmological Physics, 10, rue Alice Domon et Léonie Duquet, F-75205 Paris Cedex 13 (France)
Publication Date:
OSTI Identifier:
22676081
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2017; Journal Issue: 07; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; APPROXIMATIONS; AXIONS; BLACK HOLES; CHIRALITY; FORECASTING; GAUGE INVARIANCE; GRAVITATIONAL WAVE DETECTORS; GRAVITATIONAL WAVES; INFLATIONARY UNIVERSE; MASS; MASS DISTRIBUTION; NONLUMINOUS MATTER; RELICT RADIATION; SPECTRA; SYMMETRY

Citation Formats

Domcke, Valerie, Pieroni, Mauro, Witkowski, Lukas T., and Muia, Francesco, E-mail: valerie.domcke@apc.univ-paris7.fr, E-mail: francesco.muia@physics.ox.ac.uk, E-mail: mpieroni@apc.univ-paris7.fr, E-mail: lwitkow@apc.univ-paris7.fr. PBH dark matter from axion inflation. United States: N. p., 2017. Web. doi:10.1088/1475-7516/2017/07/048.
Domcke, Valerie, Pieroni, Mauro, Witkowski, Lukas T., & Muia, Francesco, E-mail: valerie.domcke@apc.univ-paris7.fr, E-mail: francesco.muia@physics.ox.ac.uk, E-mail: mpieroni@apc.univ-paris7.fr, E-mail: lwitkow@apc.univ-paris7.fr. PBH dark matter from axion inflation. United States. doi:10.1088/1475-7516/2017/07/048.
Domcke, Valerie, Pieroni, Mauro, Witkowski, Lukas T., and Muia, Francesco, E-mail: valerie.domcke@apc.univ-paris7.fr, E-mail: francesco.muia@physics.ox.ac.uk, E-mail: mpieroni@apc.univ-paris7.fr, E-mail: lwitkow@apc.univ-paris7.fr. Sat . "PBH dark matter from axion inflation". United States. doi:10.1088/1475-7516/2017/07/048.
@article{osti_22676081,
title = {PBH dark matter from axion inflation},
author = {Domcke, Valerie and Pieroni, Mauro and Witkowski, Lukas T. and Muia, Francesco, E-mail: valerie.domcke@apc.univ-paris7.fr, E-mail: francesco.muia@physics.ox.ac.uk, E-mail: mpieroni@apc.univ-paris7.fr, E-mail: lwitkow@apc.univ-paris7.fr},
abstractNote = {Protected by an approximate shift symmetry, axions are well motivated candidates for driving cosmic inflation. Their generic coupling to the Chern-Simons term of any gauge theory gives rise to a wide range of potentially observable signatures, including equilateral non-Gaussianites in the CMB, chiral gravitational waves in the range of direct gravitational wave detectors and primordial black holes (PBHs). In this paper we revisit these predictions for axion inflation models non-minimally coupled to gravity. Contrary to the case of minimally coupled models which typically predict scale-invariant mass distributions for the generated PBHs at small scales, we demonstrate how broadly peaked PBH spectra naturally arises in this setup. For specific parameter values, all of dark matter can be accounted for by PBHs.},
doi = {10.1088/1475-7516/2017/07/048},
journal = {Journal of Cosmology and Astroparticle Physics},
number = 07,
volume = 2017,
place = {United States},
year = {Sat Jul 01 00:00:00 EDT 2017},
month = {Sat Jul 01 00:00:00 EDT 2017}
}