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Inflationary Attractor in Braneworld Scenario


We demonstrate the attractor behavior of inflation driven by a scalar field or a tachyon field in the context of recently proposed four-dimensional effective gravity induced on the world-volume of a three-brane in five-dimensional Einstein gravity, and we obtain a set of exact inflationary solutions.Phase portraits indicate that an initial kinetic term decays rapidly and it does not prevent the onset of inflation. The trajectories more rapidly reach the slow rolling curve in braneworld scenario than in the standard cosmology.
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Recommended references: Zong-Kuan Guo,Hong-Sheng Zhang,Yuan-Zhong Zhang.(2017).Inflationary Attractor in Braneworld Scenario.[ChinaXiv:201709.00123] (Click&Copy)
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[V1] 2017-09-27 14:41:29 chinaXiv:201709.00123V1 Download
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