Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2001-11-09
Class.Quant.Grav. 19 (2002) 17-38
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
23 pages latex(2e) iopart style, with 1 pictex figure and 2 eps figures
Scientific paper
10.1088/0264-9381/19/1/302
Stationary axisymmetric spacetimes containing a pair of oppositely-rotating periodically-intersecting circular geodesics allow the study of various so-called `clock effects' by comparing either observer or geodesic proper time periods of orbital circuits defined by the observer or the geodesic crossing points. This can be extended from a comparison of clocks to a comparison of parallel transported vectors, leading to the study of special elements of the spacetime holonomy group. The band of holonomy invariance found for a dense subset of special geodesic orbits outside a certain radius in the static case does not exist in the nonstatic case. In the Kerr spacetime the dimensionless frequencies associated with parallel transport rotations can be expressed as ratios of the proper and average coordinate periods of the circular geodesics.
Bini Donato
Jantzen Robert T.
Mashhoon Bahram
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