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Abstract: We investigate Kerr-Newman black holes in which a rotating chargedring-shaped singularity induces a region which contains closed timelike curvesCTCs. Contrary to popular belief, it turns out that the time orientation ofthe CTC is opposite to the direction in which the singularity or the ergosphererotates. In this sense, CTCs -counter-rotate- against the rotating black hole.We have similar results for all spacetimes sufficiently familiar to us in whichrotation induces CTCs. This motivates our conjecture that perhaps thiscounter-rotation is not an accidental oddity particular to Kerr-Newmanspacetimes, but instead there may be a general and intuitively comprehensiblereason for this.



Author: Hajnal Andreka 1, Istvan Nemeti 1, Christian Wuthrich 2 1 Renyi Institute of Mathematics, Budapest, 2 University of California, S

Source: https://arxiv.org/







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