论文标题
相对论性重力中的准晶格
Quasi-geodesics in relativistic gravity
论文作者
论文摘要
可以通过进行仿射参数化来消除与大粒子轨迹平行的四力，但是仿射参数与适当的时间不同。主要应用是宇宙学，其中宇宙流体的元素与其四速度平行的压力梯度受到。当粒子质量变化并在标量调整宇宙学中，平行四力的自然实现发生。
A four-force parallel to the trajectory of a massive particle can always be eliminated by going to an affine parametrization, but the affine parameter is different from the proper time. The main application is to cosmology, in which elements of the cosmic fluid are subject to a pressure gradient parallel to their four-velocities. Natural implementations of parallel four-forces occur when the particle mass changes and in scalar-tensor cosmology.
