标题： 因果关系与Skyrme模型 显示英文标题

标题： Causality and the Skyrme Model

摘要： 尽管可能存在双曲性的破坏，SU(2) Skyrm 模型永远不会表现出爱因斯坦因果性的整体违反，因为其能量动量张量满足主导能量条件。它也满足强能量条件。Born-Infeld-Skyrme 模型也满足主导和强能量条件。 显示英文摘要

摘要： It is shown that despite the possibility of a breakdown of hyperbolicity, the SU(2) Skyrme model can never exhibit bulk violations of Einstein causality because its energy momentum tensor satisfies the dominant energy condition. It also satisfies the strong energy condition. The Born-Infeld-Skyrme model also satisfies both the dominant and strong energy conditions.