标题： 从更一般的引力系统拉格朗日密度中导出的动力学性质 显示英文标题

标题： The Dynamical Properties Derived from the More Generalized Lagrangian Density for A Gravitational System

摘要： 广义爱因斯坦拉格朗日密度无扭的情况的研究扩展到具有扭的更广义拉格朗日密度。 更广义拉格朗日密度的性质被系统而深入地研究。 如引力场方程、能量-动量张量密度的守恒定律、自旋密度的守恒定律以及测试粒子的运动方程都从拉格朗日密度中导出。 更广义拉格朗日密度与广义爱因斯坦拉格朗日密度之间的差异被讨论。 显示英文摘要

摘要： The studies of the generalized Einstein Lagrangian densities without torsion are extended to those of the more generalized Lagrangian densities with torsion. The properties of the more generalized Lagrangian densities are studied systematically and thoroughly. The dynamical laws of a gravitational system such as the gravitational field equations, the conservation laws of the energy-momentum tensor densities, the conservation laws of the spin densities and the equations of motion for test particle are all derived from the Lagrangian densities. The differences between the more generalized Lagrangian densities and the generalized Einstein Lagrangian densities are discussed.