声子波包假定下的二维电声子系统中的孤立子

Soliton in Two-Dimensional Electron-Phonon System

本文根据Ｄａｖｙｄｏｖ孤立子模型研究声子波包假定下的二维电声子系统中电子的运动。假定介质沿某一方向（Ｘ方向）不均匀，而沿另一方向（ｙ方向）是均匀的，则从理论上推导发现，在一定条件下电子沿Ｘ方向运动会形成孤立子，而在ｙ方向上运动呈平面波形式。

Baed on Davydov's soliton model,the motion of an electron in two-dimensional electronphonon system is studied.If the medium is not uniform in one direction(x),and is uniform in another one(y),We find that, the motion of electron along x direction will show the solitaryform under given conditions, while it shows plane wave in y direction.