论文标题

修饰的杂种膨胀,电动真空的重新加热和稳定

Modified hybrid inflation, reheating and stabilization of the electroweak vacuum

论文作者

Ibrahim, Merna, Ashry, Mustafa, Elkhateeb, Esraa, Awad, Adel M., Moursy, Ahmad

论文摘要

我们提出了对标准混合膨胀模型\ cite {linde:1993cn}的修改,该模型通过Electroweak真空稳定性将成功的混合膨胀情景与标准模型HIGGS扇区联系起来。提出的模型导致山顶型具有有效的通货膨胀潜力,具有与最近的普兰克/二头肌组合结果一致的跨普兰克和亚planckian通货膨胀制度。考虑通过通货膨胀部门腐烂到右撇子中微子。重新加热温度上的上限$ t _ {\ rm rm r} \ lsim 2 \ times 10^{11}〜(1 \ times 10^{13})$ gev,对于大〜(小)现场通胀,将抑制从一环量子校正通货膨胀潜力的贡献。这可能会将Yukawa中微子的耦合推向$ {\ cal o}(1)$,并影响真空稳定性。我们表明,SM Higgs与通货膨胀部门的耦合可以确保将电动真空稳定性达到Planck量表。所谓的混合Higgs-Inflaton模型会以阈值量表对Higgs四分之一的耦合进行正校正,这在稳定电动eakeak真空中具有非常重要的影响。我们发现,即使使用$ {\ cal o}(1)$中微子Yukawa耦合,阈值校正也使SM真空稳定性保持完整。

We propose a modification to the standard hybrid inflation model \cite{Linde:1993cn}, that connects a successful hybrid inflation scenario to the standard model Higgs sector, via the electroweak vacuum stability. The proposed model results in an effective inflation potential of a hilltop-type, with both the trans-Planckian and sub-Planckian inflation regimes consistent with the recent Planck/BICEP combined results. Reheating via the inflation sector decays to right-handed neutrinos is considered. An upper bound on the reheating temperature $T_{\rm R} \lsim 2\times 10^{11}~(1\times 10^{13})$ GeV, for large~(small) field inflation, will suppress contributions from one-loop quantum corrections to the inflation potential. This may push the neutrino Yukawa couplings to be ${\cal O}(1)$ and affect the vacuum stability. We show that the couplings of the SM Higgs to the inflation sector can guarantee the electroweak vacuum stability up to the Planck scale. The so-called hybrid Higgs-inflaton model leads to a positive correction for the Higgs quartic coupling at a threshold scale, which is shown to have a very significant effect in stabilizing the electroweak vacuum. We find that even with ${\cal O}(1)$ neutrino Yukawa couplings, threshold corrections leave the SM vacuum stability intact.

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