Hamiltonian of magnons system was simplified by the second quantization method presented by Holstein and Primakoff. The nonlinear interaction term of Hanitltonian was dealt with by mean theory.
采用霍尔斯坦和普里马科夫提出的二次量子化方法把磁振子系统的哈密顿量简化，并应用平均场理论处理了哈密顿量中的非线性相互作用项；
By the analogical method, the quantization for a second order circuit is realized.
本文将复频率谐振子量子化，然后利用类比的方法，实现了二阶电路的量子化。
By the analogical method, the quantization for a second order circuit is realized.
本文将复频率谐振子量子化，然后利用类比的方法，实现了二阶电路的量子化。
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