Features of motion around global monopole in asymptotically dS/AdS spacetime
Abstract
In this paper, we study the motion of a test particle and light around the global monopole in asymptotically dS/AdS spacetime. The motion of a test particle and light in the exterior region of the global monopole in dS/AdS spacetime has been investigated. Although the motion of the test particle is quite different from the case in asymptotically flat spacetime, the behaviour of light (null geodesic) remains unchanged except for an energy (frequency) shift. Through a phaseplane analysis, we prove analytically that the existence of a periodic solution to the equation of motion for a test particle will not be altered by the presence of the cosmological constant and the deficit angle, whose presence only affects the position and type of critical point on the phase plane. We also show that the apparent capture section of the global monopole in dS/AdS spacetime is quite different from that in flat spacetime.
 Publication:

Classical and Quantum Gravity
 Pub Date:
 May 2003
 DOI:
 10.1088/02649381/20/9/308
 arXiv:
 arXiv:astroph/0303158
 Bibcode:
 2003CQGra..20.1703H
 Keywords:

 Astrophysics;
 General Relativity and Quantum Cosmology;
 High Energy Physics  Theory
 EPrint:
 15 pages, 4 PS figures, accepted for publication in Class. Quantum Grav