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arXiv 1806.04877hep-phgr-qchep-th
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弯曲空间中的宇宙相变:引力波和对撞机特征

Cosmological Phase Transitions in Warped Space: Gravitational Waves and Collider Signatures

Eugenio Megias, Germano Nardini, Mariano Quiros

摘要:

我们研究了一个包含指数行为标量势和强反作用的5D翘曲模型中的电弱相变。通过一种新的治疗的超势形式主义,我们探索以前无法访问的参数区域。我们发现,当t 'Hooft参数足够大时(如$N\simeq 25$),会发生全息相变,并迫使Higgs粒子发生一级电弱相变,这一相变适合于电弱重子生成。该模型展示了引力波和对撞机的签名。它通常预测一个随机的引力波背景观测在激光干涉仪空间天线和爱因斯坦望远镜。此外,放射子往往足够重,以至于它逃避了当前的限制,但可能会在未来的LHC运行中出现。

英文摘要:

We study the electroweak phase transition within a 5D warped model including a scalar potential with an exponential behavior, and strong back-reaction over the metric, in the infrared. By means of a novel treatment of the superpotential formalism, we explore parameter regions that were previously inaccessible. We find that for large enough values of the t'Hooft parameter (e.g. $N\simeq 25$) the holographic phase transition occurs, and it can force the Higgs to undergo a first order electroweak phase transition, suitable for electroweak baryogenesis. The model exhibits gravitational waves and colliders signatures. It typically predicts a stochastic gravitational wave background observable both at the Laser Interferometer Space Antenna and at the Einstein Telescope. Moreover the radion tends to be heavy enough such that it evades current constraints, but may show up in future LHC runs.

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。

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