标题： 达伦-洛博-克劳福德时空中的边界源 显示英文标题

标题： Boundary sources in the Doran - Lobo - Crawford spacetime

摘要： 我们将一个由类光测地线流生成的零超曲面（因果视界）作为Doran-Lobo-Crawford时空的边界，作为Brown-York准局部能量所在的位置。 外层和内层应力张量的分量被计算并显示依赖于时间和测试粒子轨迹的碰撞参数$b$。 边界上的表面能量密度$\sigma$由与之前在Rindler视界上存储的能量相同的表达式给出。 显示英文摘要

摘要： We take a null hypersurface (the causal horizon) generated by a congruence of null geodesics as the boundary of the Doran-Lobo-Crawford spacetime, to be the place where the Brown-York quasilocal energy is located. The components of the outer and inner stress tensors are computed and shown to depend on time and on the impact parameter $b$ of the test particle trajectory. The surface energy density $\sigma$ on the boundary is given by the same expression as that obtained previously for the energy stored on a Rindler horizon.