Dj. Eisenstein et al., Cosmic complementarity: H-0 and Omega(m), from combining cosmic microwave background experiments and redshift surveys, ASTROPHYS J, 504(2), 1998, pp. L57-L60
We show that the detection of acoustic oscillations in both upcoming cosmic
microwave background (CMB) satellite experiments and large-redshift survey
s can yield 5% determinations of H-0 and Omega(m), an order-of-magnitude im
provement over CMB data alone. CMB anisotropies provide the sound horizon a
t recombination as a standard ruler. For reasonable baryon fractions, this
scale is imprinted on the galaxy power spectrum as a series of spectral fea
tures. Measuring these features in redshift space determines the Hubble con
stant, which in turn yields Omega(m) once combined with CMB data. Since the
oscillations in both power spectra are frozen-in at recombination, this te
st is insensitive to low-redshift cosmology.