KUSTANNHEIMO-STIEFEL TRANSFORMATION FOR MESON STRUCTURE MODEL WITH A FOUR-DIMENSIONAL HARMONIC OSCILLATOR
协变谐振子的介子结构模型的Kustannheimo-Stiefel变换求解

By use of the Kustannheimo-Stiefel transformation, the problem of a four-dimensional covariant harmonic oscillator can be transformed to that of a three-dimensional hydrogen atom with constraint. On this basis, the difficulty of the excitation of the time degree of freedom can be avoided naturally and the mass-squared formula for mesons can be obtained.