Cold dark matter confronts the cosmic microwave background: Large-angular-scale anisotropies inΩ0+λ=1 models

We use a new technique to compute the correlation function for large-angle cosmic microwave background anisotropies resulting from both the space and time variations in the gravitational potential in flat, vacuum-dominated, cold dark matter cosmological models. Such models with ${\mathrm{\Omega }}_0$∼0.2 fit the excess power, relative to the standard cold-dark matter model, observed in the large-scale galaxy distribution and allow a high value for the Hubble constant. The low-order multipoles and quadrupole anisotropy that are potentially observable by COBE and other ongoing experiments should definitively test these models.