Inflation parameters from Gauss-Bonnet braneworld
Inflation parameters from Gauss-Bonnet braneworld
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DOI：
10.1016/j.physletb.2005.01.019
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发表时间：
2004-09
影响因子：
4.4
通讯作者：
Hungsoo Kim;K. Kim;H. Lee;Y. S. Myung
中科院分区：
文献类型：
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作者：
Hungsoo Kim;K. Kim;H. Lee;Y. S. Myung
我们计算了Gauss-Bonnet膜世界情形下斑块膨胀的谱指数和张量标量比。补丁宇宙学模型包括Gauss-Bonnet(GB)、Randall-Sundrum(RS)和4D广义相对论(GR)情形。为了与观测数据进行比较，我们选择了大场、小场和混合势，对所有的面片模型进行了前序计算。结果表明，大场势对给定的贴片模型敏感，而小场和混合势对给定的贴片模型不敏感。与RS和GR模型相比，在GB模型中更容易区分二次势和四次势。不考虑斑块模型，从观察的角度来看，小场势能是最有前途的模型。
We calculate the spectral index and tensor-to-scalar ratio for patch inflation arisen from the Gauss–Bonnet braneworld scenario. The patch cosmological models consist of Gauss–Bonnet (GB), Randall–Sundrum (RS), and 4D general relativistic (GR) cases. In order to compare with the observation data, we perform leading-order calculations for all patch models by choosing large-field, small-field, and hybrid potentials. We show that the large-field potentials are sensitive to a given patch model, while the small-field and hybrid potentials are insensitive to a given patch model. It is easier to discriminates between quadratic potential and quartic potential in the GB model rather than RS and GR models. Irrespective of patch models, it turns out that the small-field potentials are the promising models in view of the observation.