Momentum transfer models of interacting dark energy
Date
2022Author
Linton, Mark S.
Crittenden, Robert
Pourtsidou, Alkistis
Metadata
Show full item recordAbstract
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.