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arXiv · 1302.0139

Nonlinear Resonance in Hořava-Lifshitz Bouncing Cosmologies

Rodrigo Maier
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Abstract

In this paper I examine the phase space dynamics in the framework of Non-Projectable Hořava-Lifshitz bouncing cosmologies. By considering a closed Friedmann-Lemaître-Robertson-Walker (FLRW) geometry, the first integral contains a correction term that leads to nonsingular metastable bounces in the early evolution of the universe. The matter content of the model is a massive conformally coupled scalar field, dust and radiation. A nonvanishing cosmological constant connected to a de Sitter attractor in the phase space is also assumed. In narrow windows of the parameter space, labeled by an integer $n\geq 2$, nonlinear resonance phenomena may destroy the KAM tori that trap the scalar field, leading to an exit to the de Sitter attractor. As a consequence nonlinear resonance imposes constraints on the parameters and in the initial configurations of the models so that an accelerated expansion may be realized.

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Rodrigo Maier. 2013-04-15. Nonlinear Resonance in Hořava-Lifshitz Bouncing Cosmologies. https://doi.org/10.1088/0264-9381%2F30%2F11%2F115011

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