Evidence against Ryskin’s model of cosmic acceleration

Abstract

In this paper I examine how well Ryskin's model of emergent cosmic acceleration fits several sets of cosmological observations. I find that while Ryskin's model is somewhat compatible with the standard model of cosmic acceleration (ΛCDM) for low redshift (z 1) measurements, its predictions diverge considerably from those of the standard model for measurements made at high redshift (for which z 1), and it is therefore not a compelling substitute for the standard model.