Inflation without a beginning: A Null boundary proposal

@article{Aguirre2003InflationWA,
  title={Inflation without a beginning: A Null boundary proposal},
  author={A. Aguirre and S. Gratton},
  journal={Physical Review D},
  year={2003},
  volume={67},
  pages={083515}
}
We develop our recent suggestion that inflation may be made past eternal, so that there is no initial cosmological singularity or "beginning of time". Inflation with multiple vacua generically approaches a steady-state statistical distribution of regions at these vacua, and our model follows directly from making this distribution hold at all times. We find that this corresponds (at the semi-classical level) to particularly simple cosmological boundary conditions on an infinite null surface near… Expand

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