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Dark Matter from Exponential Growth

Torsten Bringmann, Paul Frederik Depta, Marco Hufnagel, Joshua T. Ruderman, and Kai Schmidt-Hoberg
Phys. Rev. Lett. 127, 191802 – Published 3 November 2021; Erratum Phys. Rev. Lett. 128, 069901 (2022)
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Abstract

We propose a novel mechanism for the production of dark matter (DM) from a thermal bath based on the idea that DM particles χ can transform heat bath particles ψ: χψχχ. For a small initial abundance of χ, this leads to an exponential growth of the DM number density in close analogy to other familiar exponential growth processes in nature. We demonstrate that this mechanism complements freeze-in and freeze-out production in a generic way, opening new parameter space to explain the observed DM abundance, and we discuss observational prospects for such scenarios.

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  • Received 25 June 2021
  • Revised 20 August 2021
  • Accepted 14 September 2021

DOI:https://doi.org/10.1103/PhysRevLett.127.191802

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.

Published by the American Physical Society

Physics Subject Headings (PhySH)

  1. Research Areas
Particles & FieldsGravitation, Cosmology & Astrophysics

Erratum

Erratum: Dark Matter from Exponential Growth [Phys. Rev. Lett. 127, 191802 (2021)]

Torsten Bringmann, Paul Frederik Depta, Marco Hufnagel, Joshua T. Ruderman, and Kai Schmidt-Hoberg
Phys. Rev. Lett. 128, 069901 (2022)

synopsis

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Exponentially Growing Dark Matter

Published 3 November 2021

A new model explains the current density of dark matter by proposing that conventional matter converted to dark matter in the early Universe.

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Authors & Affiliations

Torsten Bringmann1,*, Paul Frederik Depta2,†, Marco Hufnagel3,‡, Joshua T. Ruderman4,2,5,6,§, and Kai Schmidt-Hoberg2,∥

  • 1Department of Physics, University of Oslo, Box 1048, N-0316 Oslo, Norway
  • 2Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, D-22607 Hamburg, Germany
  • 3Service de Physique Théorique, Université Libre de Bruxelles, Boulevard du Triomphe, CP225, B-1050 Brussels, Belgium
  • 4Center for Cosmology and Particle Physics, Department of Physics, New York University, New York, New York 10003, USA
  • 5Kavli Institute for Theoretical Physics, University of California, Santa Barbara, California 93106, USA
  • 6School of Physics and Astronomy, Tel-Aviv University, Tel-Aviv 69978, Israel

  • *Corresponding author. torsten.bringmann@fys.uio.no
  • Corresponding author. frederik.depta@desy.de
  • Corresponding author. marco.hufnagel@ulb.ac.be
  • §Corresponding author. ruderman@nyu.edu
  • Corresponding author. kai.schmidt-hoberg@desy.de

Article Text

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Issue

Vol. 127, Iss. 19 — 5 November 2021

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