标题： 具有六角对称性的Skyrme晶格 显示英文标题

标题： A Skyrme lattice with hexagonal symmetry

摘要： 最近发现，斯格明子的结构与碳化学中富勒烯壳的结构有密切的类比关系。 在这封信中，我们展示了斯格明子场的一个例子，它描述了一个具有六角对称性的斯格明子晶格，从而进一步延续了这种类比。 这一构型——在斯格明模型中的一种新颖的“畴壁”——每个重子的能量较低（约比法捷耶夫-博戈莫尔尼下界高6%），在许多方面都类似于石墨。 通过与其他已知斯格明子和斯格明晶体的每重子能量进行比较，我们讨论了寻找更高电荷的斯格明子壳的可能性。 显示英文摘要

摘要： Recently it has been found that the structure of Skyrmions has a close analogy to that of fullerene shells in carbon chemistry. In this letter we show that this analogy continues further, by presenting a Skyrme field that describes a lattice of Skyrmions with hexagonal symmetry. This configuration, a novel `domain wall' in the Skyrme model, has low energy per baryon (about 6% above the Faddeev-Bogomolny bound) and in many ways is analogous to graphite. By comparison to the energy per baryon of other known Skyrmions and also the Skyrme crystal, we discuss the possibility of finding Skyrmion shells of higher charge.