arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2307.03224hep-ph
收藏

复数双希格斯二重态模型中的引力波、气泡轮廓与重子不对称性

Gravitational Waves, Bubble Profile, and Baryon Asymmetry in the Complex 2HDM

Dorival Gonçalves, Ajay Kaladharan, Yongcheng Wu

AI总结:

本文在复数双希格斯二重态模型中探讨了强一阶相变与重子不对称性的产生,分析了引力波信号在LISA中的探测潜力,并发现气泡轮廓的近似方法对重子不对称性估计有显著影响。

摘要:

本研究在复数双希格斯二重态模型(C2HDM)中探讨了宇宙观测到的重子不对称性的产生,同时考虑了理论和当前的实验约束。在我们的研究中,我们分析了希格斯势的关键要素以理解相变模式。具体而言,我们研究了势垒的形成和真真空态的提升,它们在促成强一阶相变中起着至关重要的作用。此外,我们探索了与这种相变模式相关的潜在引力波信号,并研究了可被LISA探测的参数空间点。最后,我们比较了描述气泡轮廓的不同方法对重子不对称性计算的影响。我们将通常使用的扭结轮廓近似与隧道轮廓的显式解进行了对比。我们发现,C2HDM参数空间中不可忽略的范围会导致这两种方法在重子不对称性估计上产生显著差异。通过对参数空间的检查,我们确定了一个满足观测到的重子不对称性的基准点。

英文摘要:

This study explores the generation of the observed baryon asymmetry of the Universe within the complex Two Higgs Doublet Model (C2HDM) while considering theoretical and current experimental constraints. In our investigation, we analyze critical elements of the Higgs potential to understand the phase transition pattern. Specifically, we examine the formation of the barrier and the uplifting of the true vacuum state, which play crucial roles in facilitating a strong first-order phase transition. Furthermore, we explore the potential gravitational wave signals associated with this phase transition pattern and investigate the parameter space points that can be probed with LISA. Finally, we compare the impact of different approaches to describing the bubble profile on the calculation of the baryon asymmetry. We contrast the typically used kink profile approximation against the explicit solution of the tunneling profile. We find that a non-negligible range of the C2HDM parameter space results in significant discrepancies in the baryon asymmetry estimation between these two approaches. Through an examination of the parameter space, we identify a benchmark point that satisfies the observed baryon asymmetry.

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。

↑