Space-time as a causal set.

  title={Space-time as a causal set.},
  author={Bombelli and Lee and Meyer and Sorkin},
  journal={Physical review letters},
  volume={59 5},
  • Bombelli, Lee, +1 author Sorkin
  • Published 1987
  • Physics, Medicine, Mathematics
  • Physical review letters
We propose that space-time at the smallest scales is in reality a causal set: a locally finite set of elements endowed with a partial order corresponding to the macroscopic relation that defines past and future. We explore how a Lorentzian manifold can approximate a causal set, noting in particular that the thereby defined effective dimensionality of a given causal set can vary with length scale. Finally, we speculate briefly on the quantum dynamics of causal sets, indicating why an appropriate… Expand
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