arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1208.2291hep-thhep-ph
收藏

AdS/QCD中的反常维数和标量胶球谱

Anomalous dimensions and scalar glueball spectroscopy in AdS/QCD

H. Boschi-Filho, N. R. F. Braga, F. Jugeau, M. A. C. Torres

摘要:

本文提出了一个扩展的AdS/QCD软壁模型,它包含了类QCD反常对规范理论算符维数的贡献。这种探索性的方法导致标量胶球质量和β函数之间的关系。利用这种关系,胶球质谱的性质,出现在文献中提出的唯象β函数进行了研究。我们还考虑了逆问题:从一个与格点胶球质量相吻合的线性Regge轨道出发,找到了具有不同渐近红外行为的β函数,值得注意的是,其中一些函数在有限耦合时呈现不动点。

英文摘要:

An extended version of the AdS/QCD Soft-Wall model that incorporates QCD-like anomalous contributions to the dimensions of gauge theory operators is proposed. This exploratory approach leads to a relation between scalar glueball masses and beta functions. Using this relation, properties of the glueball mass spectroscopy that emerge from phenomenological beta functions proposed in the literature are investigated. The reverse problem is also considered: starting from a linear Regge trajectory which fits the lattice glueball masses, beta functions with different asymptotic infrared behaviours are found. Remarkably, some of them present a fixed point at finite coupling.

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。

↑