二维和四维的拓扑引力
Topological gravity in dimensions two and four
摘要：
物理学家最近对二维引力的研究，自然地推广到了四维，用西格尔范畴（Segal's category）的类似物来表述[为共形域论的研究而定义]。
英文摘要：
Recent work by physicists on gravity in two dimensions has a natural generalization to four dimensions, formulated in terms of an analogue of Segal's category [defined for the study of conformal field theory].
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
