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arXiv 2102.00680hep-th
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有质量夸克的全息核物理

Holographic Nuclear Physics with Massive Quarks

Salvatore Baldino, Lorenzo Bartolini, Stefano Bolognesi, Sven Bjarke Gudnason

摘要:

本文讨论了在色数$N_c$较大、t Hooft耦合较大的情况下,夸克质量有限的Witten-Sakai-Sugimoto模型下的核物理。由于单个重子可以用经典孤子来描述,而经典孤子的尺寸远小于核束缚态的典型距离,因此我们可以用线性近似来计算相互作用势,从而为轻束缚态提供一个自然的描述。我们发现了B=8的重子核束缚态的经典几何。夸克质量通过GMOR关系引起的有限π质量的影响是相对于无质量的情况降低了原子核的结合能。我们讨论了有限密度的情况下,一个特定的选择的立方晶格,我们找到的临界化学势,在强子相变发生。

英文摘要:

We discuss nuclear physics in the Witten-Sakai-Sugimoto model, in the limit of large number $N_c$ of colors and large 't Hooft coupling, with the addition of a finite mass for the quarks. Individual baryons are described by classical solitons whose size is much smaller than the typical distance in nuclear bound states, thus we can use the linear approximation to compute the interaction potential and provide a natural description for lightly bound states. We find the classical geometry of nuclear bound states for baryon numbers up to B=8. The effect of the finite pion mass - induced by the quark mass via the GMOR relation - is to decrease the binding energy of the nuclei with respect to the massless case. We discuss the finite density case with a particular choice of a cubic lattice, for which we find the critical chemical potential, at which the hadronic phase transition occurs.

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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