On the Stability of the CMB Autocorrelation Function on Cosmological Parameters

The properties of the Cosmic Microwave Background Radiation angular autocorrelation function in Friedman Universe with negative curvature (k=-1) are studied. The dependence of the spectral index of autocorrelation function on the density parameter of the Universe is studied numerically, taking into account the effect of geodesic mixing, occuring in k=-1 curvature Universes.