论文标题
自然通货膨胀的标量调整扩展
Scalar-tensor extension of Natural Inflation
论文作者
论文摘要
我们表明，将自然膨胀嵌入更通用的标量调整理论中，与RICCI标量和动力学术语非最小的耦合，减轻了使用观察数据的自然通货膨胀的当前张力。耦合函数尊重原始自然通货膨胀模型的电势周期和特征移位对称性$ ϕ \ rightarrow ϕ+2πf$，并以最小的势降低。此外，这表明该理论在与RICCI标量的耦合方面表现出重新对称性，并且与动力学术语的耦合很大，我们获得了与宇宙学数据的一致性，可以在任意的低周期性尺度上进行宇宙学数据的一致性，从而在树上求解了超级型号的范围，因此在天然量表中求解了自然量表量表。
We show that embedding Natural Inflation in a more general scalar-tensor theory, with non-minimal couplings to the Ricci scalar and the kinetic term, alleviates the current tension of Natural Inflation with observational data. The coupling functions respect the periodicity of the potential and the characteristic shift symmetry $ϕ\rightarrow ϕ+ 2πf$ of the original Natural Inflation model, and vanish at the minimum of the potential. Furthermore, showing that the theory exhibits a rescaling symmetry in the regime where the coupling to the Ricci scalar is small and the coupling to the kinetic term is large, we obtain that the agreement with cosmological data can take place at an arbitrarily low periodicity scale $f$, solving at tree-level the problem of super-Planckian periodicity scales needed in Natural Inflation.
