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arXiv 2002.04914hep-phhep-exhep-lathep-th
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基本复合动力学综述

Fundamental Composite Dynamics: A Review

Giacomo Cacciapaglia, Claudio Pica, Francesco Sannino

摘要:

我们介绍了基本的规范理论,可以用来构建知情的复合明亮和黑暗的标准模型的扩展,内部和超出标准的范式。理论和实验之间的差距是通过提供预测和方法来测试它们,例如,在费米尺度和通过精确的味道实验。我们将回顾历史悠久的范式,从(步行)technicolor复合戈德斯通希格斯,并讨论他们的特点和差异。复合模型中的标准模型费米子质量生成也将与它提供的挑战和机遇一起讨论。为了具体和教学,我们将集中讨论支持整体对称破缺模式SU(4)/Sp(4)的强耦合规范理论的最小构造。最基本的基本描述由SU(2)规范理论组成,其中两个狄拉克费米子根据规范群的基本表示进行变换。这种最小的选择,使我们能够使用第一原理晶格的结果来预测复合(戈德斯通)希格斯动力学和强相互作用的暗物质,对当前和未来的实验搜索的直接影响模型的大规模频谱。由于复合动力学包含了丰富的频谱的理论与动态范围从QCD类行为(近)共形的,我们也报告在这里的国家的最先进的数值和分析性能的几个强耦合的理论,包括他们的频谱,相图,并在适用的情况下,他们的(近)共形数据。

英文摘要:

We introduce fundamental gauge theories that can be employed to construct informed composite bright and dark extensions of the Standard Model, within and beyond the standard paradigms. The gap between theory and experiments is bridged by providing predictions and ways to test them, for example, at the Fermi scale and via precision flavor experiments. We will review time-honoured paradigms from (walking) technicolor to composite Goldstone Higgs and discuss their features and differences. Standard model fermion mass generation in composite models will also be discussed along with the challenges and opportunities that it offers. To be concrete and pedagogical we will concentrate on minimal constructions featuring strongly coupled gauge theories supporting the global symmetry breaking pattern SU(4)/Sp(4). The most minimal underlying fundamental description consists of an SU(2) gauge theory with two Dirac fermions transforming according to the fundamental representation of the gauge group. This minimal choice enables us to use first principle lattice results to predict the massive spectrum for models of composite (Goldstone) Higgs dynamics and strongly interacting dark matter, of immediate impact for current and future experimental searches. Because composite dynamics embraces a rich spectrum of theories with dynamics ranging from QCD-like behaviour to (near) conformal one, we also report here the state-of-the-art of numerical and analytic properties of several strongly coupled theories including their spectrum, phase diagrams and, when applicable, their (near) conformal data.

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