Last Updated
：2025/11/25
spin foam
Noun
countable
uncountable
Japanese Meaning
（物理学）量子重力理論において、ファインマンの路積分の記述で全経路の合計に含めるべき構成の一つとして、二次元の面から構成される位相的構造を指す。
（ plural ）
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(physics) A topological structure made out of two-dimensional faces that represents one of the configurations that must be summed to obtain a Feynman's path integral description of quantum gravity.
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spin foam
In loop quantum gravity, researchers calculate the amplitudes of a spin foam to derive transition probabilities between quantum geometries.
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In loop quantum gravity, researchers calculate the amplitudes of a spin foam to derive transition probabilities between quantum geometries.
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