Jumping Out of the Light-Higgs Conformal Window
Jumping Out of the Light-Higgs Conformal Window
复制标题
跳出光-希格斯共形窗口
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
Francesco Sannino
中科院分区：
文献类型：
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作者：
O. Antipin;M. Mojaza;Francesco Sannino
我们研究了具有类希格斯基本粒子的规范理论中的共形相变的一般性质。这些理论提供了一个很好的竞技场，以适当地研究共形动力学和发现新的功能。我们表明，在边界处的希格斯共形窗口的相变是不光滑的，而是一个跳跃的已知微扰的例子。此外，还给出了跃变或光滑跃变的一般条件。跳跃意味着理论的质量谱将在相变处跳跃。然而，它仍然允许其中一个状态，即理论中的量子态，比破碎相中最重的状态轻。最后，我们给出了一个可计算的Higgs模型，在这个模型中，我们可以用微扰理论确定Higgs共形窗口，共形破缺相的谱，并证明它具有跳跃型共形相变。
We investigate generic properties of the conformal phase transition in gauge theories featuring Higgs-like fundamental particles. These theories provide an excellent arena to properly investigate conformal dynamics and discover novel features. We show that the phase transition at the boundary of the Higgs conformal window is not smooth but a jumping one for the known perturbative examples. In addition the general conditions under which the transition is either jumping or smooth are provided. Jumping implies that the massive spectrum of the theory will jump at the phase transition. It, however, still allows for one of the states, the would be dilaton of the theory, to be lighter than the heaviest states in the broken phase. Finally we exhibit a calculable Higgs model in which we can, in perturbation theory, determine the Higgs conformal window, the spectrum in the conformally broken phase and demonstrate it to possess a jumping type conformal phase transition.