Influence of dark energy on time-like geodesic motion in Schwarzschild spacetime

Influence of dark energy on time-like geodesic

motion in Schwarzschild spacetime

Chen Ju-Hua;Wang Yong-Jiu

【期刊名称】《中国物理：英文版》 【年(卷),期】2008(017)004

【摘要】In this paper we investigate the influence of the dark energy on the time-like geodesic motion of a particle in Schwarzschild spacetime by analysing the behaviour of the effective potential which appears in an equation of motion.For the non-radial time-like geodesics, we find a bound orbit when the particle energy is in an appropriate range, and also find another possible orbit, which is that the particle drops straightly into the singularity of a black hole or escapes to infinity. For the radial time-like geodesics, we find an unstable circular orbit when the particle energy is the critical value, in which case it is possible for the particle to escape to infinity. 【总页数】5页(1184-1188)

【关键词】dark energy, effective potential, time-like geodesic motion 【作者】Chen Ju-Hua;Wang Yong-Jiu

【作者单位】College of Physics and Information Science, Hunan Normal University, Changsha 410081, China;College of Physics and Information Science, Hunan Normal University, Changsha 410081, China 【正文语种】中文