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arXiv · 1306.2901

Fluid Inflation

Xingang Chen·Hassan Firouzjahi·Mohammad Hossein Namjoo·Misao Sasaki
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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 $f_{NL}= 5/2$.

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Xingang Chen, Hassan Firouzjahi, Mohammad Hossein Namjoo, Misao Sasaki. 2013-09-23. Fluid Inflation. https://doi.org/10.1088/1475-7516%2F2013%2F09%2F012

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