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Autoparallel orbits in Kerr-Brans-Dicke spacetimes

Research output: Contribution to journalJournal article


<mark>Journal publication date</mark>01/2004
<mark>Journal</mark>International Journal of Modern Physics D
Number of pages11
<mark>Original language</mark>English


The bounded orbital motion of a massive spinless test particle in the background of a Kerr Brans–Dicke geometry is analysed in terms of worldlines that are auto-parallels of different metric compatible spacetime connections. In one case the connection is that of Levi–Civita with zero-torsion. In the second case the connection has torsion determined by the gradient of the Brans–Dicke background scalar field. The calculations permit one in principle to discriminate between these possibilities.