  In principle, the tensor metric (gravity-wave) perturbations that arise in
inflationary models can, beyond probing the underlying inflationary model,
provide information about the Universe: ionization history, presence of a
cosmological constant, and epoch of matter-radiation equality. Because tensor
perturbations give rise to anisotropy of the cosmic background radiation (CBR)
solely through the Sachs-Wolfe effect we are able to calculate analytically the
variance of the multipole moments of this part of the CBR temperature
anisotropy. In so doing, we carefully take account of the contribution of
tensor perturbations that entered the Hubble radius during both the
matter-dominated and radiation-dominated epoch by means of a transfer function.
The striking feature in the spectrum of multipole amplitudes is a dramatic fall
off for $l\ga \sqrt{1+\zl}$, where $\zl$ is the red shift of the
last-scattering surface. ...
