标题： 非对称引力理论中的测地线和路径运动 显示英文标题

标题： Geodesic and Path Motion in the Nonsymmetric Gravitational Theory

摘要： 我们研究了在非对称引力理论（NGT）中测试粒子运动的问题，假设粒子的四速度沿轨迹平行传输。预测的运动是在静态、球对称背景场中进行研究的，特别关注径向和圆周运动。有趣的是，发现从任意两个非零径向位置旅行所需的固有时间是有限的。还发现，对于某些形式的运动，圆轨道可以在比广义相对论更小的半径下得到支持。我们提出了三种相互作用，这些相互作用可以作为将测试粒子耦合到NGT场反对称部分的替代方法。其中一种在静态、球对称场的弱场极限下表现为一种杨-米尔斯力，这可能导致有趣的物理现象。 显示英文摘要

摘要： We study the problem of test-particle motion in the Nonsymmetric Gravitational Theory (NGT) assuming the four-velocity of the particle is parallel-transported along the trajectory. The predicted motion is studied on a static, spherically symmetric background field, with particular attention paid to radial and circular motions. Interestingly, it is found that the proper time taken to travel between any two non-zero radial positions is finite. It is also found that circular orbits can be supported at lower radii than in General Relativity for certain forms of motion. We present three interactions which could be used as alternate methods for coupling a test-particle to the antisymmetric components of the NGT field. One of these takes the form of a Yukawa force in the weak-field limit of a static, spherically symmetric field, which could lead to interesting phenomenology.