A generalized inflation model with cosmic gravitational waves

Abstract

We propose a $\Lambda$-inflation model which explains a large fraction of the COBE signal by cosmic gravitational waves. The primordial density perturbations fulfil both the contraints of large-scale microwave background and galaxy cluster normalization. The model is tested against the galaxy cluster power spectrum and the high-multipole angular CMB anisotropy.

4 pages, oral contribution at the conference "Energy Density in the Universe", Les Arcs, France (January 22-29, 2000)