Geodesics In A Spinning String Spacetime
- Ovidius University, Dept. of Physics, B-dul Mamaia 124, 8700 Constanta (Romania)
The geodesics equations for a rotating observer in a spinning string geometry are investigated using the Euler - Lagrange equations. For test particles with vanishing angular momentum, the radial equation of motion does not depend on the angular velocity {omega} but on the angular momentum of the string. A massless particle moves tachyonic but iteed tends asymptotically to unit velocity after a time of the order of few Planck time b. The spacetime has a horizon at r = 0, irrespective of the value of {omega} but its angular velocity is given by {omega} - 1/b. The Sagnac time delay is computed proving to depend both on {omega} and the radius of the circular orbit. The velocity of an ingoing massive test particle approaches zero very close to the spinning string, as if it were rejected by it.
- OSTI ID:
- 20900782
- Journal Information:
- AIP Conference Proceedings, Vol. 878, Issue 1; Conference: DSU 2006: 2. international conference on the dark side of the universe, Madrid (Spain), 20-24 Jun 2006; Other Information: DOI: 10.1063/1.2409105; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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