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arXiv 2610.09615hep-ph

QCD的双重膨胀子全息模型:跑动耦合与介子现象学

A Double-Dilaton Holographic Model of QCD: Running Coupling and Meson Phenomenology

Hector Cancio, Pere Masjuan

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中文总结 AI 辅助

该研究提出双重膨胀子全息QCD模型,通过破坏共形与手征对称性并纳入大N_c修正,成功描述强耦合常数从低能到高能的跑动,产生红外不动点及与实验相符的线性Regge轨迹。

中文摘要 AI 辅助

我们提出了一个QCD的全息模型,用于研究从低能区到高能区的强耦合常数$\alpha_s$。该方法采用双重膨胀子背景,该背景破坏了共形对称性和手征对称性,同时纳入大$N_c$修正以将全息描述与微扰QCD联系起来。该模型导致一个红外不动点,并提供了向pQCD跑动的平滑过渡。所得背景还为标量、矢量和张量态产生了线性Regge轨迹,与实验数据合理吻合。

英文摘要

We present a holographic model of QCD to study the strong coupling constant $α_s$ from the low-energy region to the high-energy regime. The approach uses a double-dilaton background, which breaks conformal and chiral symmetries, while large-$N_c$ corrections are incorporated to connect the holographic description with perturbative QCD. The model leads to an infrared fixed point and provides a smooth transition to the pQCD running. The resulting background also produces linear Regge trajectories for scalar, vector, and tensor states in reasonable agreement with experimental data.

发表机构

  • Universitat Autònoma de Barcelona(巴塞罗那自治大学)
  • Institut de Física d’Altes Energies (IFAE)(高能物理研究所(IFAE))
  • The Barcelona Institute of Science and Technology (BIST)(巴塞罗那科学技术学院(BIST))

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