arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节（Veterans Day），12 日无更新
arXiv 1204.4155hep-phastro-ph.CO
收藏

混合势下Higgs场假真空的暴胀

Inflation from the Higgs field false vacuum with hybrid potential

Isabella Masina, Alessio Notari

备注：
v1: 9 pages, 3 figures; v2: 9 pages, 3 figures, improvements in the text, version matching the JCAP published one
阅读 PDF
arXiv 页面 ↗HTML 原文 ↗

摘要：

我们最近提出[1，2]，暴胀可能始于希格斯势的局部极小值，场值约为$10^{15}-10^{17}$ GeV，这存在于顶夸克和希格斯质量的窄带值中，因此预测希格斯质量在123-129 GeV范围内，并对顶质量和宇宙学张量标量比$r$进行了预测。如果有额外的自由度，允许过渡到辐射时代，就可以实现通货膨胀。文[1]中我们曾提出这样的场是Brans-Dicke标量场。在这里，我们提出了一种替代的可能性与一个额外的次显性标量非常弱地耦合到希格斯玻色子，实现（倒）混合通货膨胀的情况。有趣的是，我们发现这样的模型有一个额外的约束$m_H<125.3 \pm 3_{th}$，其中$3_{th}$是目前的理论不确定性的标准模型RGES。张量与标量之比必须在窄范围$10^{-4}\lesssim r<0.007$内，并且可以获得与观察范围兼容的标量谱指数值。此外，如果我们强制模型具有次普朗克场偏移，则选择较窄的范围$10^{-4} \lesssim r<0.001$和大约$m_H <124 \pm 3_{th}$的希格斯质量上限。

英文摘要：

We have recently suggested [1,2] that Inflation could have started in a local minimum of the Higgs potential at field values of about $10^{15}-10^{17}$ GeV, which exists for a narrow band of values of the top quark and Higgs masses and thus gives rise to a prediction on the Higgs mass to be in the range 123-129 GeV, together with a prediction on the the top mass and the cosmological tensor-to-scalar ratio $r$. Inflation can be achieved provided there is an additional degree of freedom which allows the transition to a radiation era. In [1] we had proposed such field to be a Brans-Dicke scalar. Here we present an alternative possibility with an additional subdominant scalar very weakly coupled to the Higgs, realizing an (inverted) hybrid Inflation scenario. Interestingly, we show that such model has an additional constraint $m_H<125.3 \pm 3_{th}$, where $3_{th}$ is the present theoretical uncertainty on the Standard Model RGEs. The tensor-to-scalar ratio has to be within the narrow range $10^{-4}\lesssim r<0.007$, and values of the scalar spectral index compatible with the observed range can be obtained. Moreover, if we impose the model to have subplanckian field excursion, this selects a narrower range $10^{-4} \lesssim r<0.001$ and an upper bound on the Higgs mass of about $m_H <124 \pm 3_{th}$.

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。

↑