COLLECTIVE EXCITATION IN THE HUBBARD MODEL WITH INTRASITE ATTRACTION.

被引:0
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作者
Kostyrko, T. [1 ]
机构
[1] A. Mickiewicz Univ, Poznan, Pol, A. Mickiewicz Univ, Poznan, Pol
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关键词
ELECTRONS;
D O I
暂无
中图分类号
O441 [电磁学]; TM12 [];
学科分类号
0809 ;
摘要
The Hubbard model with an intrasite attraction has been recently extensively investigated, as it provides a novel, non-BCS, mechanism of superconductivity, due to the formation of Boson-like electron pairs (intrasite bipolarons) in a real lattice rather than a reciprocal one. The author investigates the collective excitations described by the model using the random phase approximation.
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