Baryons from instantons in holographic QCD
Baryons from instantons in holographic QCD
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DOI：
10.1143/ptp.117.1157
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发表时间：
2007-01
影响因子：
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通讯作者：
H. Hata;T. Sakai;S. Sugimoto;Shinichi Yamato
中科院分区：
文献类型：
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作者：
H. Hata;T. Sakai;S. Sugimoto;Shinichi Yamato
我们认为，在全息对偶QCD的D4/D8膜配置的基础上制定的动力学重子方面。我们构造了一个带有单位重子数的孤子解，并证明了它是四维Yang-Mills理论的一个固定尺寸的瞬子解。味D8-膜上的Chern-Simons项在保护瞬子不坍缩到零大小方面起着至关重要的作用。通过量子化孤子的集体坐标，我们导出了重子谱。负宇称重子以及具有更高自旋和等自旋的重子可以用简单的方法得到。
We consider aspects of dynamical baryons in a holographic dual of QCD that is formulated on the basis of a D4/D8-brane configuration. We construct a soliton solution carrying a unit baryon number and show that it is obtained as 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 derive the baryon spectra. Negative-parity baryons as well as baryons with higher spins and isospins can be obtained in a simple manner.