Higgs-Dilaton Cosmology: an effective field theory approach
Higgs-Dilaton Cosmology: an effective field theory approach
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希格斯膨胀宇宙学：一种有效的场论方法
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
M. Shaposhnikov
中科院分区：
文献类型：
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作者：
Fedor Bezrukov;Georgios K. Karananas;J. Rubio;M. Shaposhnikov
希格斯玻色子宇宙学模型能够同时描述早期宇宙的暴胀膨胀和暗能量占主导地位的阶段，负责今天的加速。这也导致了标量扰动n（s）的光谱倾斜和暗能量状态方程Ω之间的非平凡关系。我们从有效场论的角度研究了这个模型的自洽性。考虑到动力学背景场的影响，我们确定了理论的有效截止，它在参数上大于从暴胀到现在的所有相关能量标度。最后，我们制定了一套假设需要估计的量子校正的幅度在一个系统的方式，并表明，n（s）和Ω之间的连接保持不变，如果这些假设得到满足。
The Higgs-dilaton cosmological model is able to describe simultaneously an inflationary expansion in the early Universe and a dark energy dominated stage responsible for the present day acceleration. It also leads to a nontrivial relation between the spectral tilt of scalar perturbations n(s) and the dark energy equation of state omega. We study the self-consistency of this model from an effective field theory point of view. Taking into account the influence of the dynamical background fields, we determine the effective cutoff of the theory, which turns out to be parametrically larger than all the relevant energy scales from inflation to the present epoch. We finally formulate the set of assumptions needed to estimate the amplitude of the quantum corrections in a systematic way and show that the connection between n(s) and omega remains unaltered if these assumptions are satisfied.