Natural chaotic inflation in supergravity
Natural chaotic inflation in supergravity
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DOI：
10.1103/physrevlett.85.3572
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发表时间：
2000-04
影响因子：
8.6
通讯作者：
M. Kawasaki;Masahide Yamaguchi;T. Yanagida
中科院分区：
文献类型：
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作者：
M. Kawasaki;Masahide Yamaguchi;T. Yanagida
我们提出了一个超引力下的混沌暴胀模型。在该模型中，Kahler势具有Nambu-Goldstone型的手征多重态的位移对称性，这确保了在普朗克尺度之外的暴胀子势的平坦性。通过在超势中引入一个小的位移对称破缺项，我们证明了混沌暴胀的自然发生。这可能为在超引力框架下建立暴胀宇宙学的模型开辟一个新的分支。
We propose a chaotic inflation model in supergravity. In the model the Kahler potential has a Nambu-Goldstone-type shift symmetry of the inflaton chiral multiplet which ensures the flatness of the inflaton potential beyond the Planck scale. We show that chaotic inflation naturally takes place by introducing a small breaking term of the shift symmetry in the superpotential. This may open a new branch of model building for inflationary cosmology in the framework of supergravity.