2010

Non-gaussianities and the Stimulated creation of quanta in the inflationary universe

Agullo, Ivan, Parker, Leonard

Understand

Cosmological inflation generates a spectrum of density perturbations that can seed the cosmic structures we observe today.

These perturbations are usually computed as the result of the gravitationally-induced spontaneous creation of perturbations from an initial vacuum state.
In this paper, we compute the perturbations arising from gravitationally-induced stimulated creation when perturbations are already present in the initial state.
The effect of these initial perturbations is not diluted by inflation and survives to its end, and beyond.

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