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- W2005767488 abstract "We study a simple extension of Linde's hybrid inflation model, with the inflaton mass term replaced by the most general renormalizable potential for ensuremath{varphi}. The unprocessed power spectrum of density perturbations can have two minima and one maximum, roughly corresponding to two steep regions separated by a somewhat flat region in V(ensuremath{varphi}). In the examples studied here, a sufficient amount of inflation and normalization to COBE requires a vacuum scale of ${10}^{16}$ GeV and a ensuremath{varphi} mass of ${10}^{13}$ GeV. Depending on the initial value of ensuremath{varphi}, our model can give either less (ensuremath{sim}n1) or more (ensuremath{sim}n>1) power on small scales compared to the scale-invariant spectrum (n=1), given the normalization to COBE. Given the same power on small scales, our power spectra can give more power on intermediate scales, compared to simple ``tilted'' power spectra." @default.
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- W2005767488 date "1994-11-15" @default.
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- W2005767488 title "Polynomial hybrid inflation" @default.
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- W2005767488 doi "https://doi.org/10.1103/physrevd.50.6135" @default.
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