中文

超越量纲分析:Higgs 与新 Higgs 暴胀不破坏幺正性

高能物理 - 唯象学 2017-06-28 v2 宇宙学与河外天体物理 高能物理 - 理论

摘要

朴素量纲分析似乎表明,在 Higgs 和新 Higgs 暴胀框架下可能出现幺正性破坏。这些破坏似乎发生在每给定 Higgs 玻色子真空期望值所对应的势能越过在电弱真空附近计算得到的微扰截断标度之时。与这些预期相反,本文表明,通过使用依赖于背景的截断标度的精确分析,并在微扰散射振幅中引入相空间体积的贡献,在整个宇宙演化过程中绝不会发生(微扰)幺正性破坏。

关键词

引用

@article{arxiv.1612.06253,
  title  = {Beyond dimensional analysis: Higgs and new Higgs inflations {\it do not} violate unitarity},
  author = {Albert Escrivà and Cristiano Germani},
  journal= {arXiv preprint arXiv:1612.06253},
  year   = {2017}
}

备注

v2: comment of cascades of large number of diagrams added. Clarification of why previous literature did not prove unitarity of the scalar sector. Comments on unitarity of the gauge sectors added and miscellaneous of clarifications. Accepted in PRD