中文摘要：

磁场中二类超导体的Abrikosov涡旋晶格态中存在着两种激发子：声学光子模和声学声子模。其中声学声子模是一种Goldstone Boson软模,即静止质量为零的一种元激发。作者从Ginburg-Landau模型出发,对二类超导体最低Landau能级近似模型中,使用改进的高斯变分法,非微扰地计算了声学声子模和声学光子模的色散关系。

英文摘要：

The excitations in lattice in type-Ⅱ superconductors in magnetic field contain acoustic and optical phonons.The acoustic phonon is Goldstone Boson with zero mass.By using Gaussian variational method,the authors calculate dispersion relations of acoustic and optical phonons non-perturbatively based on Ginzburg-Landau model with lowest Landau level approximation.