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arXiv 1503.08606hep-ph
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有限手征化学势下全息QCD中矢量介子的质量

The masses of vector mesons in holographic QCD at finite chiral chemical potential

S. S. Afonin, A. A. Andrianov, D. Espriu

摘要:

中心重离子碰撞可能引起拓扑电荷的相当大的波动。这种效应预计会扭曲强子质量的色散关系。我们构建了一个一般的设置,这种现象的一个紧凑的描述自下而上的全息QCD方法的框架。本文提出了一对矢量介子的软壁全息模型。具有不同的圆偏振的状态被示出具有不同的有效质量。稳定性的要求对模型的可能选择施加了强有力的限制。

英文摘要:

Central heavy-ion collisions may induce sizeable fluctuations of the topological charge. This effect is expected to distort the dispersion relation for the hadron masses. We construct a general setup for a compact description of this phenomenon in the framework of bottom-up holographic approach to QCD. A couple of soft wall holographic models are proposed for the vector mesons. The states having different circular polarizations are shown to have different effective mass. The requirement of stability imposes strong constraints on the possible choice of models.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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