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arXiv · hep-th/0701280

Baryons from instantons in holographic QCD

Hiroyuki Hata·Tadakatsu Sakai·Shigeki Sugimoto·Shinichiro Yamato
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Abstract

We consider aspects of dynamical baryons in a holographic dual of QCD that is proposed on the basis of a D4/D8-brane configuration. We construct a soliton solution carrying a unit baryon number and show that it is given by an instanton solution of four-dimensional Yang-Mills theory with fixed size. The Chern-Simons term on the flavor D8-branes plays a crucial role of protecting the instanton from collapsing to zero size. By quantizing the collective coordinates of the soliton, we work out the baryon spectra. Negative-parity baryons as well as baryons with higher spins and isospins can be obtained in a simple manner.

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Hiroyuki Hata, Tadakatsu Sakai, Shigeki Sugimoto, Shinichiro Yamato. 2007-08-28. Baryons from instantons in holographic QCD. https://doi.org/10.1143/ptp.117.1157

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