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arXiv 0803.0857nlin.SImath-phmath.MPmath.SG
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一类广义Kowalevski顶运动问题的显式积分

Explicit integration of one problem of motion of the generalized Kowalevski top

Mikhail P. Kharlamov, Alexander Y. Savushkin

摘要:

在双力场中Kowalevski顶的运动问题中,M.P.Kharlamov(Mekh.特维德Tela,32,2002)。我们表明,该流形上的运动方程可以分离的变量,新的变量s1,s2是椭圆函数的时间适当的变化。自然相位变量(角速度的分量和力相对于可移动基座的方向矢量)通过s1、s2以初等代数函数明确地表示。

英文摘要:

In the problem of motion of the Kowalevski top in a double force field the 4-dimensional invariant submanifold of the phase space was pointed out by M.P.Kharlamov (Mekh. Tverd. Tela, 32, 2002). We show that the equations of motion on this manifold can be separated by the appropriate change of variables, the new variables s1, s2 being elliptic functions of time. The natural phase variables (components of the angular velocity and the direction vectors of the forces with respect to the movable basis) are expressed via s1, s2 explicitly in elementary algebraic functions.

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