Classical and quantum energies for interacting magnetic systems

被引:0
|
作者
Amour, L. [1 ]
Nourrigat, J. [1 ]
机构
[1] Univ Reims, Lab Math Reims, UMR CNRS 9008, Moulin Housse,BP 1039, F-51687 Reims 2, France
关键词
Interacting spins; ground state energy; interacting magnets; classical energy; higher spins; quantum electrodynamics; quantum radiative corrections; multiplicity of the ground states; GROUND-STATES; EXISTENCE; NUMBER; MODELS;
D O I
10.1142/S0129055X22500179
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The purpose of this paper 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.
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页数:17
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