用重整化群流方程研究铁氧体的自旋波模型

Renormalization group flow equations for ferrite spin waves model

采用重整化群的方法研究铁氧体的自旋波模型,导出一组非线性流方程,并求出铁氧体自旋波模型的能谱表达式,当双子格的自旋相等时,铁氧体自旋波模型的能谱表达式退化为反铁磁自旋波模型的能谱表达式.

In the paper, using a method based upon the renormalization group, the ferrite spin waves model is studied, the nonlinear flow equations of ferrite spin waves model are driven, and energy spectrum formula of ferrite spin waves model is obtained by the flow equations. When the spin of two lattices are equal, energy spectrum formula of ferrite spin waves model is degenerated energy spectrum formula of antiferromagnetie spin waves model.