期刊
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
卷 -, 期 11, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1475-7516/2013/11/031
关键词
alternatives to inflation; cosmic singularity; gravity
资金
- RFBR [12-02-00653, 12-02-31778, NS-5590.2012.2]
- Ministry of Science and Education of Russian Federation [8412]
We consider a simple cosmological model that includes a long ekpyrotic contraction stage and smooth bounce after it. Ekpyrotic behavior is due to a scalar field with a negative exponential potential, whereas the Galileon field produces bounce. We give an analytical picture of how the bounce occurs within the weak gravity regime, and then perform numerical analysis to extend our results to a non-perturbative regime.
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