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arXiv · 1109.5753

Scalar Perturbation in Symmetric Lee-Wick Bouncing Universe

Inyong Cho·O-Kab Kwon
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Abstract

We investigate the scalar perturbation in the Lee-Wick bouncing universe driven by an ordinary scalar field plus a ghost field. We consider only a symmetric evolution of the universe and the scalar fields about the bouncing point. The gauge invariant Sasaki-Mukhanov variable is numerically solved in the spatially flat gauge. We find a new form of the initial perturbation growing during the contracting phase. After the bouncing, this growing mode stabilizes to a constant mode which is responsible for the late-time power spectrum.

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BibTeXRIS

Inyong Cho, O-Kab Kwon. 2011-10-04. Scalar Perturbation in Symmetric Lee-Wick Bouncing Universe. https://doi.org/10.1088/1475-7516%2F2011%2F11%2F043

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