标题： Veneziano极限下的复合Higgs的全息模型。 第一部分：玻色子 sector 显示英文标题

标题： Holographic models of composite Higgs in the Veneziano limit. Part I. Bosonic sector

摘要： 我们研究了强耦合、近似标度不变的规范理论，这些理论在红外线下会形成质量间隙。 我们认为大量费米子味数最适合为复合希格斯情景提供紫外完备化。 全息方法允许描述Veneziano极限下非微扰动力学的定性特征。 我们引入了新的自下而上的全息模型，这些模型包含了味对几何结构的反馈效应，并表明这可以将质量间隙与味对称破缺尺度关联起来。 我们计算了各种复合玻色子态的质量谱，并研究了其依赖于对称破缺算符的标度维度以及味数量的变化情况。 轻度π介子的不同区域得到了批判性的调查。 我们仔细评估了全息方法的有效范围，并将其与晶格模拟和Nambu--Jona-Lasinio模型进行了比较。 显示英文摘要

摘要： We study strongly-coupled, approximately scale-invariant gauge theories, which develop a mass gap in the infrared. We argue that a large number of fermion flavours is most suitable to provide an ultraviolet completion for the composite Higgs scenario. The holographic approach allows to describe the qualitative features of the non-perturbative dynamics in the Veneziano limit. We introduce new bottom-up holographic models, which incorporate the backreaction of flavour on the geometry, and show that this can correlate the mass gap to the scale of flavour-symmetry breaking. We compute the mass spectrum for the various composite bosonic states, and study its dependence on the scaling dimension of the symmetry-breaking operators, as well as on the number of flavours. The different regions with a light dilaton are critically surveyed. We carefully assess the domain of validity of the holographic approach, and compare it with lattice simulations and the Nambu--Jona-Lasinio model.