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arXiv 1207.2644hep-phhep-th
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轴介子和赝标介子的反指数软壁模型

Soft wall model with inverse exponential profile as a model for the axial and pseudoscalar mesons

S. S. Afonin

摘要:

根据规范/引力对偶性的猜想,强耦合的四维场论可以用一阶近似的自由场论的对偶五维场论来描述。然而,在自底向上的AdS/QCD模型中,通常对轴矢量扇区的描述包括与体标量场的四次相互作用。问题出现了,是否有可能以一种与原始提议更一致的方式,即在自由5D理论内,描述手征对称性破缺的某些方面?我们建议,一个自然的候选人,为这个目的是软壁模型与逆指数剖面。

英文摘要:

According to the conjecture of the gauge/gravity duality a strongly coupled 4D field theory may be described by a dual 5D theory which is a free field theory in the first approximation. The usual description of the axial-vector sector in the bottom-up AdS/QCD models includes, however, the quartic interaction with a bulk scalar field. The question appears whether it is possible to describe some aspects of the chiral symmetry breaking in a way more consistent with the original proposal, i.e. within a free 5D theory? We suggest that a natural candidate for this purpose is the soft-wall model with inverse exponential profile.

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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