arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1402.3738hep-ph
收藏

希格斯暴胀与宇宙学常数

Higgs inflation and the cosmological constant

Fred Jegerlehner

摘要:

希格斯玻色子不仅诱导了所有SM粒子的质量,而且由于其特殊的质量值,希格斯玻色子是暴胀子的天然候选者,事实上,它通过提供必要的暗能量来统治早期宇宙的演化,暗能量仍然是占主导地位的能量密度。SM运行耦合不仅允许我们将SM物理推断到普朗克尺度,但同样重要的是,它们触发了希格斯机制。这是可能的,因为希格斯势中的裸质量项在大约μ_0 = 1.4x10^16 GeV处改变了符号,并且在对称相中被普朗克质量中的二次项增强。如此巨大的希格斯质量项能够在引发早期宇宙的膨胀中发挥关键作用。在这篇文章中,我们扩展了我们以前的调查工作的细节希格斯暴胀的情况。我们展示了如何不同的条款,有助于希格斯拉格朗日影响通货膨胀。给定SM及其外推到μ> μ_0的尺度,我们发现一个可计算的宇宙学常数V(0),它与尺度弱相关,实际上在暴胀期间仍然很大。这与希格斯涨落场依赖的Delta V(phi)不同,它在暴胀期间呈指数衰减,实际上不会提供足够的暴胀量。涨落场具有不同的有效质量,使裸希格斯跃迁点移动到一个较低的值μ '_0 = 7.7x10^14 GeV。真空能量V(0)与M_P1 ^[4]成正比,它有一个系数在希格斯跃迁点附近为零,因此裸宇宙学常数和重整化宇宙学常数在这一点上是一致的。希格斯粒子在再加热和重子生成中的作用被强调。

英文摘要:

The Higgs not only induces the masses of all SM particles, the Higgs, given its special mass value, is the natural candidate for the inflaton and in fact is ruling the evolution of the early universe, by providing the necessary dark energy which remains the dominant energy density. SM running couplings not only allow us to extrapolate SM physics up to the Planck scale, but equally important they are triggering the Higgs mechanism. This is possible by the fact that the bare mass term in the Higgs potential changes sign at about mu_0 = 1.4x10^16 GeV and in the symmetric phase is enhanced by quadratic terms in the Planck mass. Such a huge Higgs mass term is able to play a key role in triggering inflation in the early universe. In this article we extend our previous investigation by working out the details of a Higgs inflation scenario. We show how different terms contributing to the Higgs Lagrangian are affecting inflation. Given the SM and its extrapolation to scales mu>mu_0 we find a calculable cosmological constant V(0) which is weakly scale dependent and actually remains large during inflation. This is different to the Higgs fluctuation field dependent Delta V(phi), which decays exponentially during inflation, and actually would not provide a sufficient amount of inflation. The fluctuation field has a different effective mass which shifts the bare Higgs transition point to a lower value mu'_0 = 7.7x10^14 GeV. The vacuum energy V(0) being proportional to M_Pl^4 has a coefficient which vanishes near the Higgs transition point, such that the bare and the renormalized cosmological constant match at this point. The role of the Higgs in reheating and baryogenesis is emphasized.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑