Momentum transfer models of interacting dark energy

Mark S. Linton, Robert Crittenden, Alkistis Pourtsidou

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Abstract

We consider two models of interacting dark energy, both of which interact only through momentum exchange. One is a phenomenological one-parameter extension to wCDM, and the other is a coupled quintessence model described by a Lagrangian formalism. Using a variety of high and low redshift data sets, we perform a global fitting of cosmological parameters and compare to ΛCDM, uncoupled quintessence, and wCDM. We find that the models are competitive with ΛCDM, even obtaining a better fit when certain data sets are included.
Original languageEnglish
Article number075
Number of pages24
JournalJournal of Cosmology and Astroparticle Physics
Volume08
Issue number075
DOIs
Publication statusPublished - 31 Aug 2022

Keywords

  • astro-ph.CO
  • dark energy theory
  • cosmological parameters from CMBR
  • dark matter theory
  • UKRI
  • MRC
  • MR/S016066/1
  • STFC
  • ST/S000550/1

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