The Shared Causal Pasts and Futures of Cosmological Events

@article{Friedman2013TheSC,
  title={The Shared Causal Pasts and Futures of Cosmological Events},
  author={A. Friedman and D. Kaiser and J. Gallicchio},
  journal={Physical Review D},
  year={2013},
  volume={88},
  pages={044038}
}
We derive criteria for whether two cosmological events can have a shared causal past or a shared causal future, assuming a Friedmann-Lemaitre-Robertson-Walker universe with best-fit \Lambda CDM cosmological parameters from the Planck satellite. We further derive criteria for whether either cosmic event could have been in past causal contact with our own worldline since the time of the hot "big bang", which we take to be the end of early-universe inflation. We find that pairs of objects such as… Expand
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