PT Journal
AU Adolf, P
   Hirsch, M
   Krieg, S
   Pas, H
   Tabet, M
TI Fitting the DESI BAO data with dark energy driven by the Cohen-Kaplan-Nelson bound
SO Journal of Cosmology and Astroparticle Physics
JI J. Cosmol. Astropart. Phys.
PY 2024
BP 048
EP 18pp
VL 08
IS 8
DI 10.1088/1475-7516/2024/08/048
LA English
DE dark energy theory; dark energy experiments; Frequentist statistics; baryon acoustic oscillations
AB Gravity constrains the range of validity of quantum field theory. As has been pointed out by Cohen, Kaplan, and Nelson (CKN), such effects lead to interdependent ultraviolet (UV) and infrared (IR) cutoffs that may stabilize the dark energy of the universe against quantum corrections, if the IR cutoff is set by the Hubble horizon. As a consequence of the cosmic expansion, this argument implies a time-dependent dark energy density. In this paper we confront this idea with recent data from DESI BAO, Hubble and supernova measurements. We find that the CKN model provides a better fit to the data than the Lambda CDM model and can compete with other models of time-dependent dark energy that have been studied so far.
ER