1-22 Baryon and Chiral Symmetry Breaking in Holographic QCD

• 作者: Sven Bjarke Gudnason
• 来源期刊: 中国科学院近代物理研究所和兰州重离子研究装置年报：英文版
• 学科: 物理学
• 关键词: BARYON CHIRAL SYMMETRY
• 年，卷（期）: 2015,（1）
• 页码范围: 33-33
• 页数: 1页
• 分类号: O4

摘要

We study the relationship between chiral symmetry breaking and baryons in holographic QCD. We construct a soliton with unit baryon charge in the presence of a nonzero mean value of the scalar bifundamental field, which is dual to the chiral condensate. We obtain a relation between the chiral condensate and the mass of the baryon, and find in a clear-cut way that at large values of the condensate, the holographic soliton is no longer located on the IR wall, being split into two halves, which are symmetrically located on the left and right flavor branes. On the other hand, we find that the local value of the quark condensate is suppressed in the core of the soliton, which is evidence for a partial chiral symmetry restoration inside the baryon.