论文标题
全息QCD中的对称能
Symmetry energy in holographic QCD
论文作者
论文摘要
我们研究了对称能量（SE），这是核物理学，Witten-Sakai-Sugimoto模型中的重要数量，以及在全息QCD的更简单的硬壁模型中。 SE是由于中子和质子数量不相等，因此对核的能量贡献。使用代表涂片的激体和量化其同胞素的同质ANSATZ，我们使用isospin Zeromode的量化提取了SE和质子分数，假设电荷中立性和β-平衡。我们还显示了我们根据孤子子改编的方法与在全息边界上由化学势控制的同胞蛋白的通常方式之间的等效性。我们发现，如果与现象学拟合中通常使用的相比，我们可以在WSS模型中很好地描述SE在WSS模型中得到很好的描述。
We study the symmetry energy (SE), an important quantity in nuclear physics, in the Witten-Sakai-Sugimoto model and in a much simpler hard-wall model of holographic QCD. The SE is the energy contribution to the nucleus due to having an unequal number of neutrons and protons. Using a homogeneous Ansatz representing smeared instantons and quantizing their isospin, we extract the SE and the proton fraction assuming charge neutrality and beta-equilibrium, using quantization of the isospin zeromode. We also show the equivalence between our method adapted from solitons and the usual way of the isospin controlled by a chemical potential at the holographic boundary. We find that the SE can be well described in the WSS model if we allow for a larger 't Hooft coupling and lower Kaluza-Klein scale than is normally used in phenomenological fits.
