Baryons from instantons in holographic QCD

By H. Hata, T. Sakai, S. Sugimoto, Shinichi Yamato. 2007

304 citations recorded by the source corpus.

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.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/cf0b086873cd24d82fcce2bef0c47fdca8bb2b49

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In Nuclear and High Energy Physics

Citations in the corpus

Light-front holographic QCD and emerging confinement (2014, background): “The baryon number of the Skyrmion is equivalent to the instanton number in the 4+1 dimensional effective theory [190], so the Sakai-Sugimoto model provides a connection between various solitonic descriptions of the baryon [344].”
Anomalies and the chiral magnetic effect in the Sakai-Sugimoto model (2009, unknown): “[16, 20, 25].”
Cold Nuclear Matter In Holographic QCD (2007, methodology): “To take this into account, the authors of [16] and [17] considered more general smooth instanton configurations with varying scale factor, inserting these”
Dynamics of baryons from string theory and vector dominance (2007, background): “The size of the small instanton is determined where the combined energy is minimized [21, 29] ρ(2)baryon ≃ 1 MKK √”