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arXiv 1810.04656hep-th
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多尺度动力学带隙非约束理论的质量谱

Mass spectrum of gapped, non-confining theories with multi-scale dynamics

Daniel Elander, Anton F. Faedo, David Mateos, David Pravos, Javier G. Subils

摘要:

利用超引力的对偶描述,研究了单参数三维场论中自旋0和自旋2复合态的质量谱。这些理论尽管是非限制性的,但仍表现出质量间隙,并且通过改变参数,可以使流动任意接近对应于Ooguri-Park共形场论的IR固定点。在参数空间的另一端,动力学变得准限制。胶球谱在这两种极限情况之间插值,并且对于近共形动力学,近似于由相关算子变形的Ooguri-Park理论的结果。为了阐明在何种情况下准共形动力学导致的存在下,一个轻的赝介子,我们进行了研究的光谱上的硬壁红外截止的位置的依赖性,并发现,在这种情况下,这种状态的质量被解除深红外效应。

英文摘要:

We study the mass spectrum of spin-0 and spin-2 composite states in a one-parameter family of three-dimensional field theories by making use of their dual descriptions in terms of supergravity. These theories exhibit a mass gap despite being non-confining, and by varying a parameter can be made to flow arbitrarily close to an IR fixed point corresponding to the Ooguri-Park conformal field theory. At the opposite end of parameter space, the dynamics becomes quasi-confining. The glueball spectrum interpolates between these two limiting cases, and for nearly conformal dynamics approaches the result of the Ooguri-Park theory deformed by a relevant operator. In order to elucidate under which circumstances quasi-conformal dynamics leads to the presence of a light pseudo-dilaton, we perform a study of the dependence of the spectrum on the position of a hard-wall IR cutoff and find that, in the present case, the mass of such state is lifted by deep-IR effects.

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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