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arXiv 1012.1050hep-thastro-ph.HEgr-qc
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根据WMAP7数据的Chaubergin气体膜世界膨胀

Chaplygin gas braneworld inflation according to WMAP7 data

R. Zarrouki, M. Bennai

摘要:

在膜世界暴胀的框架下,考虑了具有指数势的Chaubergin气体模型.我们在高能极限下采用慢滚近似,导出了各种暴胀谱微扰参数。我们证明了暴胀观测量只依赖于e-折叠数N和慢滚参数e(end)的最终值。然而,对于小运行的标量谱指数dns/dlnk,暴胀观测值与最近的WMAP 7数据吻合得很好。

英文摘要:

We consider a Chaplygin gas model with an exponential potential in framework of braneworld inflation. We apply the slow-roll approximation in the high-energy limit to derive various inflationary spectrum perturbation parameters. We show that the inflation observables depend only on the e-folding number N and the final value of the slow-roll parameter e(end). Whereas for small running of the scalar spectral index dns/dlnk, the inflation observables are in good agreement with recent WMAP7 data.

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