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Holographic quarkyonic matter
Journal of High Energy Physics ( IF 5.4 ) Pub Date : 2020-09-01 , DOI: 10.1007/jhep09(2020)112
Nicolas Kovensky , Andreas Schmitt

We point out a new configuration in the Witten-Sakai-Sugimoto model, allowing baryons in the pointlike approximation to coexist with fundamental quarks. The resulting phase is a holographic realization of quarkyonic matter, which is predicted to occur in QCD at a large number of colors, and possibly plays a role in real-world QCD as well. We find that holographic quarkyonic matter is chirally symmetric and that, for large baryon chemical potentials, it is energetically preferred over pure nuclear matter and over pure quark matter. The zero-temperature transition from nuclear matter to the quarkyonic phase is of first order in the chiral limit and for a realistic pion mass. For pion masses far beyond the physical point we observe a quark-hadron continuity due to the presence of quarkyonic matter.

中文翻译:

全息夸克物质

我们指出了 Witten-Sakai-Sugimoto 模型中的一个新配置,允许点状近似中的重子与基本夸克共存。由此产生的相位是夸克物质的全息实现,预计它会以多种颜色出现在 QCD 中,并且可能在现实世界的 QCD 中也发挥作用。我们发现全息夸克物质是手性对称的,并且对于大的重子化学势,它在能量上优于纯核物质和纯夸克物质。从核物质到夸克子相的零温度转变在手性极限和实际π子质量中是一阶的。对于远远超出物理点的介子质量,由于夸克物质的存在,我们观察到夸克-强子的连续性。
更新日期:2020-09-01
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