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EFFECTIVE HAMILTONIAN DYNAMICS VIA THE MAUPERTUIS PRINCIPLE

机译:通过Maupertuis原则有效的Hamiltonian动态

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We consider the dynamics of a Hamiltonian particle forced by a rapidly oscillating potential in m-dimensional space. As alternative to the established approach of averaging Hamiltonian dynamics by reformulating the system as Hamilton-Jacobi equation, we propose an averaging technique via reformulation using the Maupertuis principle. We analyse the result of these two approaches for one space dimension. For the initial value problem the solutions converge uniformly when the total energy is fixed. If the initial velocity is fixed independently of the microscopic scale, then the limit solution depends on the choice of subsequence. We show similar results hold for the one-dimensional boundary value problem. In the higher dimensional case we show a novel connection between the Hamilton-Jacobi and Maupertuis approaches, namely that the sets of minimisers and saddle points coincide for these functionals.
机译:我们考虑在M尺寸空间中快速振荡潜力所强制的汉密尔顿粒子的动态。替代通过将系统重新制定为汉密尔顿 - Jacobi方程来实现哈密顿动力学的既定方法,我们通过使用拟拟人原则来推荐平均技术。我们分析了这两种空间维度的这两种方法的结果。对于初始值问题,解决方案在固定总能量时均匀地收敛。如果初始速度独立于微观尺度固定,则限制解决方案取决于随后的选择。我们对一维边值问题进行了类似的结果。在较高的尺寸案例中,我们在汉密尔顿 - 雅各比和林伯特武士方法之间表现出一种新的联系,即最小化器和马鞍点的集合对这些功能重合。

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