More on a Holographic Dual of QCD(Particles and Fields)
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概要
- 論文の詳細を見る
We investigate the interactions among the pion, vector mesons and external gauge fields in the holographic dual of massless QCD proposed in a previous paper [T. Sakai and S. Sugimoto, Prog. Theor. Phys. 113 (2005), 843; hep-th/0412141] on the basis of probe D8-branes embedded in a D4-brane background in type IIA string theory. We obtain the coupling constants by performing both analytic and numerical calculations, and compare them with experimental data. It is found that the vector meson dominance in the pion form factor as well as in the Wess-Zumino-Witten term holds in an intriguing manner. We also study the ω→πγ and ω→3π decay amplitudes. It is shown that the interactions relevant to these decay amplitudes have the same structure as that proposed by Fujiwara et al. [T. Fujiwara, T. Kugo, H. Terao, S. Uehara and K. Yamawaki, Prog. Theor. Phys. 73 (1985), 926]. Various relations among the masses and the coupling constants of an infinite tower of mesons are derived. These relations play crucial roles in the analysis. We find that most of the results are consistent with experiments.
- 理論物理学刊行会の論文
- 2005-11-25
著者
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SUGIMOTO Shigeki
Institute for the Physics and Mathematics of the Universe, The University of Tokyo
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Sakai Tadakatsu
Department Of Mathematical Sciences Faculty Of Sciences Ibaraki University
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Sugimoto Shigeki
Institute For The Physics And Mathematics Of The Universe The University Of Tokyo
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Sugimoto Shigeki
Yukawa Institute For Theoretical Physics Kyoto University
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Sakai Tadakatsu
Department of Physics, Nagoya University:Kobayashi-Maskawa Institute for the Origin of Particles and the Universe (KMI), Nagoya University
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SAKAI Tadakatsu
Department of Physics, Faculty of Sciences, Ibaraki University
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SAKAI Tadakatsu
Department of Physics, Ibaraki University
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