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Obtaining a Heisenberg Hamiltonian from the Hubbard model

 

作者: Charles L. Cleveland,   Rodrigo Medina A.,  

 

期刊: American Journal of Physics  （AIP Available online 1976）
卷期: Volume 44, issue 1  

页码: 44-46

 

ISSN:0002-9505

 

年代: 1976

 

DOI:10.1119/1.10537

 

出版商: American Association of Physics Teachers

 

数据来源: AIP

 

摘要:

A pedagogically useful method of obtaining a Heisenberg spin–spin interaction from a familiar many‐electron Hamiltonian by means of ordinary degenerate perturbation theory is presented.

 

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