Constrained inflaton due to a complex scalar
Constrained inflaton due to a complex scalar
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DOI：
10.1088/1475-7516/2015/09/039
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发表时间：
2015-05
影响因子：
6.4
通讯作者：
Romy H. S. Budhi;Shoichi Kashiwase;D. Suematsu
中科院分区：
文献类型：
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作者：
Romy H. S. Budhi;Shoichi Kashiwase;D. Suematsu
我们重新审视通货膨胀由于一个复杂的标量模型中的约束暴胀。在标量场空间中，暴胀子像单场暴胀一样，沿着一个特殊标量势的螺旋形谷线演化。由于亚普朗克暴胀子具有较长的慢滚路径，可以诱导出足够的e-折叠，在特定的极限下，标量谱指数和张量-标量比与单项式势φn的暴胀子具有等价的表达式.通过改变电位中的参数，可以得到它们的有利值。这个模型可以嵌入到一定的辐射中微子质量模型中
We reexamine inflation due to a constrained inflaton in the model of a complex scalar. Inflaton evolves along a spiral-like valley of special scalar potential in the scalar field space just like single field inflation. Sub-Planckian inflaton can induce sufficient e-foldings because of a long slow-roll path. In a special limit, the scalar spectral index and the tensor-to-scalar ratio has equivalent expressions to the inflation with monomial potential φn. The favorable values for them could be obtained by varying parameters in the potential. This model could be embedded in a certain radiative neutrino mass model