科研之友
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摘要
The anticommutative Green's functions of a dimer and its energy spectrum and correlation functions are calculated exactly and in the approximation of static fluctuations within the framework of the Hubbard model. The calculation allows for the interaction of electrons located on different sites. It is shown that this leads to splitting of some energy levels and a substantial restructuring of the energy spectrum of the system.
- 出版日期2015-3
