N-Relaxion: Large Field Excursions from a Few Site Relaxion Model
N-Relaxion: Large Field Excursions from a Few Site Relaxion Model
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N-Relaxion：来自几个站点松弛模型的大场偏移
DOI：
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
R. Matheus
中科院分区：
文献类型：
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作者：
Nayara Fonseca;L. Lima;C. S. Machado;R. Matheus
弛豫子模型是解释标准模型标量部分辐射稳定性的一种有趣的新途径。它们需要非常大的场位移，这在一个自洽的紫外完备理论中很难产生，并且难以与弛豫子的紧致场空间相协调。我们提出了一个N - 位点模型，它自然地产生了解决这些问题所需的大衰变常数。我们的模型相对于先前的提议具有明显的优势：其构造涉及非阿贝尔场，允许可控的高能行为以及在粒子物理学和暴胀模型中更多的模型构建可能性，并且当位点数量很大时还允许一个连续极限，这可以被解释为一个弯曲的额外维度。
Relaxion models are an interesting new avenue to explain the radiative stability of the Standard Model scalar sector. They require very large field excursions, which are difficult to generate in a consistent UV completion and to reconcile with the compact field space of the relaxion. We propose an N-site model which naturally generates the large decay constant needed to address these issues. Our model offers distinct advantages with respect to previous proposals: the construction involves non-abelian fields, allowing for controlled high energy behaviour and more model building possibilities, both in particle physics and inflationary models, and also admits a continuum limit when the number of sites is large, which may be interpreted as a warped extra dimension.