Momentum transfer models of interacting dark energy

Mark S. Linton, Robert Crittenden, Alkistis Pourtsidou

Research output: Contribution to journalArticlepeer-review


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
JournalJournal of Cosmology and Astroparticle Physics (JCAP)
Publication statusAccepted/In press - 5 Jun 2022


  • astro-ph.CO


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