Also known as Kaluza–Klein compactification
procedure of putting a physical field theory on a spacetime of the form K × Y, where K is a compact manifold
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紧致化(或紧化；compactification)，在物理学中指改变时空中某些维度的拓扑结构，使其从展开的无限大尺度，变成有限大的周期性结构。
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