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李政道教授于一九七四年五月访沪期间,作了题为“不平常的核态”的学术报告。在报告中,李政道根据高能物理学的一些基本原理,分析了参加强作用的自旋为零、宇称为正的σ介子场的特性,预言将有一种依靠这种σ介子传递核力的“不平常的核态”存在。当原子核从平常核态转变为不平常核态时,核的许多性质都会有很大的变化。这种变化的
During his visit to Shanghai in May 1974, Professor Li Zhengdao made an academic report entitled “Unusual Nuclear State”. In the report, according to some basic principles of high-energy physics, Li Zheng-tao analyzed the properties of the sigma-moment field with zero spins and parity parity that participate in the strong action. It is predicted that there will be a kind of σ- “Unusual nuclear state” exists. When the nucleus changes from the normal nuclear state to the extraordinary nuclear state, many properties of the nuclear will vary greatly. This change