论文标题
分析性SU(N)在有限的Baryon密度下
Analytic SU(N) Skyrmions at finite Baryon density
论文作者
论文摘要
我们在SU(N)Skyrme模型中构建了生活在有限的BARYON密度的分析(3+1) - 二维天空,这些模型不是SU(2)中的琐碎嵌入在SU(N)中。我们将Euler Angles分解用于任意n和有限的Baryon密度的广义刺猬Ansatz。我们发现的高拓扑电荷的天空表示可以明确计算的光滑重型层。特别是,我们确定了显示大n极限平稳性的任何n的能量与重骨电荷比。也可以分析与这些配置的BPS结合的接近性。这些有限密度天际的能量密度曲线具有\ textit {lasagna-like}形状,与最近的实验发现一致。剪切模量也可以精确地估算,我们的分析结果接近文献中最近的数值研究。
We construct analytic (3+1)-dimensional Skyrmions living at finite Baryon density in the SU(N) Skyrme model that are not trivial embeddings of SU(2) into SU(N). We used Euler angles decomposition for arbitrary N and the generalized hedgehog Ansatz at finite Baryon density. The Skyrmions of high topological charge that we find represent smooth Baryonic layers whose properties can be computed explicitly. In particular, we determine the energy to Baryon charge ratio for any N showing the smoothness of the large N limit. The closeness to the BPS bound of these configurations can also be analyzed. The energy density profiles of these finite density Skyrmions have \textit{lasagna-like} shape in agreement with recent experimental findings. The shear modulus can be precisely estimated as well and our analytical result is close to recent numerical studies in the literature.