Hybrid Higgs inflation: The use of disformal transformation

Hybrid Higgs inflation: The use of disformal transformation
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混合希格斯暴胀:使用不正规变换

DOI:
10.1103/physrevd.97.083512
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发表时间:
2018
期刊:
影响因子:
5
通讯作者:
Maeda Kei-ichi
Maeda Kei-ichi
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Sato Seiga ;Maeda Kei-ichi

文献摘要

相似文献

我们提出了一个混合型的传统Higgs暴胀和新的Higgs暴胀模型。我们执行一个非正式的变换到爱因斯坦框架和分析的背景动力学和截断模型中的宇宙学扰动,在该模型中,我们忽略了希格斯场的高阶导数项。由观测到的密度扰动功率谱,我们得到了导数耦合中非最小耦合常数和质量参数的约束。虽然混合模型中的原始倾斜几乎没有变化,但张量-标量比从新的Higgs暴胀模型中的值向传统的Higgs暴胀模型中的值移动。我们证实了我们的结果通过数值分析的ADM形式主义的完整理论中的约旦框架。
We propose a hybrid type of the conventional Higgs inflation and new Higgs inflation models. We perform a disformal transformation into the Einstein frame and analyze the background dynamics and the cosmological perturbations in the truncated model, in which we ignore the higher-derivative terms of the Higgs field. From the observed power spectrum of the density perturbations, we obtain the constraint on the nonminimal coupling constantand the mass parameterin the derivative coupling. Although the primordial tiltin the hybrid model barely changes, the tensor-to-scalar ratiomoves from the value in the new Higgs inflationary model to that in the conventional Higgs inflationary model asincreases. We confirm our results by numerical analysis by ADM formalism of the full theory in the Jordan frame.