论文标题
相互作用的磁系统的经典和量子能
Classical and quantum energies for interacting magnetic systems
论文作者
论文摘要
本文的目的是对量子电动力学中自旋系统的基态渐近扩展的第一个非消失项（二次）的解释，因为自旋磁矩为$ 0 $。其中一种解释与某些古典物理法则直接联系。操作员$ a_m $仅在有限维旋转状态空间并与不同解释的连接中发挥作用，并且与基态的多样性密切相关。
The purpose of this article is to give different interpretations of the first non vanishing term (quadratic) of the ground state asymptotic expansion for a spin system in quantum electrodynamics, as the spin magnetic moments go to $0$. One of the interpretations makes a direct link with some classical physics laws. A central role is played by an operator $A_M$ acting only in the finite dimensional spin state space and making the connections with the different interpretations, and also being in close relation with the multiplicity of the ground state.
