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来自维基百科,自由的百科全书
南部-戈德斯通定理(Nambu-Goldstone Theorem)指連續對稱性被自發破缺後必存在零質量玻色粒子(南部-金石玻色子、Nambu-Goldstone bosons)這一定論,此粒子被稱為戈德斯通玻色子(或稱南部-戈德斯通玻色子)。這個定理在粒子物理中有着重要應用,如π介子就是對應着近似手徵對稱性破缺的戈德斯通玻色子。
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