摘要
在考虑三体排斥相互作用的前提下，本文讨论了加载在光学晶格中具有两体吸引相互作用的^7Li原子Mott相的准粒子和准空穴的激发，并得出：随着三体排斥相互作用的增加，准粒子的激发能会增加，准空穴的激发能会减小。对于低填充粒子数，准空穴激发能减小得不明显，随着填充粒子数的增加，准空穴激发能会明显减小。
In this paper, the excitation spectra of quasiparticles and quasiholes in Mott-insulator phase of 7Li atoms which have an attractive two-body interaction in an optical lattice are discussed when the repulsive three-body interaction is considered. It is concluded that with the increase of the repulsive three-body interaction, the energy of quasiparticles is increased and the energy of quasiholes is decreased. For a low filling factor of atoms, the energy of quasiholes is decreased slightly. With the increase of the filling factor of atoms, the energy of quasiholes is decreased remarkably.
出处
《红外》
CAS
2009年第2期41-43,共3页
Infrared
