  Likelihood analyses of the COBE-DMR sky maps are used to determine the
normalization of the inverse-power-law-potential scalar field dark energy
model. Predictions of the DMR-normalized model are compared to various
observations to constrain the allowed range of model parameters. Although the
derived constraints are restrictive, evolving dark energy density scalar field
models remain an observationally-viable alternative to the constant
cosmological constant model.
