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DOE OSTI · 22282668

Fluid inflation

Chen, X.·Firouzjahi, H.·Namjoo, M. H.
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Abstract

In this work we present an inflationary mechanism based on fluid dynamics. Starting with the action for a single barotropic perfect fluid, we outline the procedure to calculate the power spectrum and the bispectrum of the curvature perturbation. It is shown that a perfect barotropic fluid naturally gives rise to a non-attractor inflationary universe in which the curvature perturbation is not frozen on super-horizon scales. We show that a scale-invariant power spectrum can be obtained with the local non-Gaussianity parameter f{sub NL} = 5/2.

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79 ASTRONOMY AND ASTROPHYSICSASTROPHYSICSATTRACTORSENERGY SPECTRAFLUID MECHANICSINFLATIONARY UNIVERSEINFLATONSPERTURBATION THEORYSCALE INVARIANCE

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Chen, X., Firouzjahi, H., Namjoo, M. H.. 2013-09-01. Fluid inflation. https://doi.org/10.1088/1475-7516%2F2013%2F09%2F012

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