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arXiv · 1006.3075

Inflaton fragmentation: Emergence of pseudo-stable inflaton lumps (oscillons) after inflation

Mustafa A. Amin
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Abstract

We investigate the emergence of large, localized, pseudo-stable configurations (oscillons) from inflaton fragmentation at the end of inflation. We predict the number density of large oscillons, and the conditions necessary for their emergence in a class of inflationary models. Analytic estimates are provided for a 3+1 and 1+1-dimensional universe. We test our predictions with detailed numerical simulations in 1+1-dimensions. We see a zoo of oscillons emerging from the simulations, including the usual small amplitude "sech" oscillons as well as large "flat-topped" oscillons. The emergent oscillons account for approximately 80 per cent of the energy density of the inflaton.

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Mustafa A. Amin. 2010-09-13. Inflaton fragmentation: Emergence of pseudo-stable inflaton lumps (oscillons) after inflation. https://arxiv.org/abs/1006.3075

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