可积模型中的电子对形成
Electron pair forming in an integrable model
摘要:
我们考虑一个晶格模型,其中声子与电子对散射。所有的特征值和特征向量都可以解析地得到。对于一个合适的参数选择的基态包括一个费米海的非相互作用的电子,在顶部的一层成对的电子。电子对的结合能被增加的动能部分抵消。这导致电子的动能谱中的间隙。
英文摘要:
We consider a lattice model in which phonons scatter with pairs of electrons. All eigenvalues and eigenvectors can be obtained analytically. For a suitable choice of parameters the ground state consists of a Fermi sea of non-interacting electrons, with on top a layer of paired electrons. The binding energy of the electron pairs is partly cancelled by an increased kinetic energy. This results in a gap in the kinetic energy spectrum of the electrons.
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