Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2005-11-24
Phys.Rev. D74 (2006) 064019
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
23 pages, 3 figures; v2: expanded version (27 pages, 3 figures)
Scientific paper
10.1103/PhysRevD.74.064019
Fermi coordinates are directly constructed in de Sitter and Goedel spacetimes and the corresponding exact coordinate transformations are given explicitly. The quasi-inertial Fermi coordinates are then employed to discuss the dynamics of a free test particle in these spacetimes and the results are compared to the corresponding generalized Jacobi equations that contain only the lowest-order tidal terms. The domain of validity of the generalized Jacobi equation is thus examined in these cases. Furthermore, the difficulty of constructing explicit Fermi coordinates in black-hole spacetimes is demonstrated.
Chicone Carmen
Mashhoon Bahram
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