Abstract
We reconsider the second order slow-roll approximation of Stewart and Lyth. For the resulting nonlinear Abel equation, we find a new eigenvalue spectrum of the spectral index in the ‘blue’ regime n 5 〉1. Some of the discrete values have consistent fits to the cumulative COBE data as well as to recent ground-base CMB experiments.
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Mielke, E.W., Schunck, F.E. (2002). Inflation with a Blue Eigenvalue Spectrum. In: Macias, A., Cervantes-Cota, J.L., Lämmerzahl, C. (eds) Exact Solutions and Scalar Fields in Gravity. Springer, Boston, MA. https://doi.org/10.1007/0-306-47115-9_17
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DOI: https://doi.org/10.1007/0-306-47115-9_17
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