标题： 一种用于拓扑变化的体柄演算 显示英文标题

标题： A handlebody calculus for topology change

摘要： 我们考虑量子引力中某些有趣的进程，这些进程涉及空间拓扑的变化。 我们使用莫尔斯理论和手柄体的工具来表征由索金提出的拓扑变化。 我们的结果支持这样的观点，即卡拉比-丘单极子的对产生以及各种高维物体的形成都是允许的具有非零振幅的转变。 显示英文摘要

摘要： We consider certain interesting processes in quantum gravity which involve a change of spatial topology. We use Morse theory and the machinery of handlebodies to characterise topology changes as suggested by Sorkin. Our results support the view that that the pair production of Kaluza-Klein monopoles and the nucleation of various higher dimensional objects are allowed transitions with non-zero amplitude.