%0 Journal Article
%T Eigenvalues of the Stewart-Lyth equation for inflation with a blue spectrum
%A Franz E. Schunck
%A Eckehard W. Mielke
%J Physics
%D 2000
%I arXiv
%R 10.1016/S0370-2693(00)00689-4
%X By using the rather stringent nonlinear second order slow-roll approximation, we reconsider the nonlinear second order Abel equation of Stewart and Lyth. We determine a new blue eigenvalue spectrum. Some of the discrete values of the spectral index $n_s$ have consistent fits to the cumulative COBE data as well as to recent ground-base CMB experiments.
%U http://arxiv.org/abs/astro-ph/0006348v1