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Parity horizons in shape dynamics
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DOI：10.1088/0264-9381/33/22/225002.png)
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摘要
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I introduce the notion of a parity horizon, and show that many simple solutions of shape dynamics possess them. I show that the event horizons of the known asymptotically flat black hole solutions of shape dynamics are parity horizons and that this notion of parity implies that these horizons possess a notion of CPT invariance that can in some cases be extended to the solution as a whole. I present three new solutions of shape dynamics with parity horizons and find that not only do event horizons become parity horizons in shape dynamics, but observer-dependent horizons and Cauchy horizons do as well. The fact that Cauchy horizons become (singular) parity horizons suggests a general chronology protection mechanism in shape dynamics that prevents the formation of closed timelike curves.
Keyword:
black holes
gravity
shape dynamics
general relativity
期刊
IF:
3.7
论文数:
1.3W
被引数:
3.0W
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