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 language | English |
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Article number | 075 |
Number of pages | 24 |
Journal | Journal of Cosmology and Astroparticle Physics |
Volume | 08 |
Issue number | 075 |
DOIs | |
Publication status | Published - 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