Cosmology and the S-matrix

@inproceedings{Bousso2005CosmologyAT,
  title={Cosmology and the S-matrix},
  author={Raphael Bousso},
  year={2005}
}
We study conditions for the existence of asymptotic observables in cosmology. With the exception of de Sitter space, the thermal properties of accelerating universes permit arbitrarily long observations, and guarantee the production of accessible states of arbitrarily large entropy. This suggests that some asymptotic observables may exist, despite the presence of an event horizon. Comparison with decelerating universes shows surprising similarities: Neither type suffers from the limitations… CONTINUE READING

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