Motion of spinning particles in non asymptotically flat spacetimes

Abstract

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.

arXiv comment10 pages, 5 figures, 4 tables

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Cited by in corpus (7)

• Charged black hole in $4D$ Einstein-Gauss-Bonnet gravity: Particle motion, plasma effect on weak gravitational lensing and centre-of-mass energy
• Spinning test particle motion around a traversable wormhole
• A Critical Assessment of Black Hole Solutions With a Linear Term in Their Redshift Function
• Internal structures and circular orbits for test particles
• Trajectories of photons around a rotating black hole with unusual asymptotics
• Spin dynamics of moving bodies in rotating black hole spacetimes
• Robust topological invariants of timelike circular orbits for spinning test particles in black hole spacetimes