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arXiv · 1301.4631

Primordial scalar perturbations in tachyonic power-law inflation

Rudinei C. de Souza·Gilberto M. Kremer
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Abstract

In this work we determine the power spectrum of the gravitational potential of the primordial fluctuations for an inflationary model whose \emph{inflaton} is a non-canonical scalar field of the tachyon-type. The respective background field equations for an inverse-square potential produce a power-law inflation, and it is explicitly shown that for such a potential the power spectrum tends to be scale-independent for highly accelerated regimes in the inflationary expansion.

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Rudinei C. de Souza, Gilberto M. Kremer. 2013-01-20. Primordial scalar perturbations in tachyonic power-law inflation. https://doi.org/10.1103/physrevd.89.027302

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