Title: Dynamical Chaotic Inflation in the Light of BICEP2 Show Chinese title

Title: 大尺度混沌暴胀在BICEP2的视角下

Abstract: The measurement of a large tensor-to-scalar ratio by the BICEP2 experiment, r = 0.20 (-0.05)(+0.07), severely restricts the landscape of viable inflationary models and shifts attention once more towards models featuring large inflaton field values. In this context, chaotic inflation based on a fractional power-law potential that is dynamically generated by the dynamics of a strongly coupled supersymmetric gauge theory appears to be particularly attractive. We revisit this class of inflation models and find that, in the light of the BICEP2 measurement, models with a non-minimal gauge group behind the dynamical model seem to be disfavored, while the model with the simplest group, i.e. SU(2), is consistent with all results. We also discuss how the dynamical model can be distinguished from the standard chaotic inflation model based on a quadratic inflaton potential. Show Chinese abstract

Abstract: 由BICEP2实验测得的大张力比r=0.20(-0.05)(+0.07)，严重限制了可行的暴胀模型的景观，并再次将注意力转向具有大暴胀场值的模型。在此背景下，基于由强耦合超对称规范理论动力学动态生成的分数幂律势能的混沌暴胀似乎特别有吸引力。我们重新审视这类暴胀模型，并发现根据BICEP2测量，在非最小规范群背后的动态模型似乎不被青睐，而具有最简单群，即SU(2)的模型与所有结果一致。我们还讨论了如何根据二次暴胀势能的标准混沌暴胀模型来区分动态模型。