The assumption of asymptotic flatness for isolated astrophysical bodies may be considered an approximation when one considers a cosmological context where a cosmological constant or vacuum energy is present. In this framework we study the motion of spinning particles in static, spherically symmetric and asymptotically non-flat spacetimes with repulsive cosmological vacuum energy and quintessential field. Due to the combined effects of gravitational attraction and cosmological repulsion, the region where stable circular orbits are allowed is restricted by an innermost and an outermost stable circular orbits. We show that taking into account the spin of test particles may enlarge or shrink the region of allowed stable circular orbits depending on whether the spin is co-rotating or counter-rotating with the angular momentum of the particles.A preprint version of the article is available at ArXiv.

中文翻译：

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非渐近平坦时空中旋转粒子的运动

当人们考虑存在宇宙常数或真空能的宇宙环境时，可以将孤立的天体的渐近平坦假设视为一种近似。在此框架中，我们研究了具有排斥性宇宙真空能和典型场的静态，球对称和渐近非平坦时空中旋转粒子的运动。由于引力吸引和宇宙学排斥的共同作用，允许稳定圆形轨道的区域受到最里面和最外面的稳定圆形轨道的限制。我们表明考虑到测试粒子的自旋可能会扩大或缩小允许的稳定圆形轨道的区域，具体取决于自旋是与粒子的角动量共同旋转还是反向旋转。该文章的预印本可从ArXiv获得。