• Corpus ID: 15374712

Quantum Gravity In De Sitter Space

@article{Witten2001QuantumGI,
  title={Quantum Gravity In De Sitter Space},
  author={Edward Witten},
  journal={arXiv: High Energy Physics - Theory},
  year={2001}
}
  • E. Witten
  • Published 13 June 2001
  • Physics
  • arXiv: High Energy Physics - Theory
We discuss some general properties of quantum gravity in De Sitter space. It has been argued that the Hilbert space is of finite dimension. This suggests a macroscopic argument that General Relativity cannot be quantized -- unless it is embedded in a more precise theory that determines the value of the cosmological constant. We give a definition of the quantum Hilbert space using the asymptotic behavior in the past and future, without requiring detailed microscopic knowledge. We discuss the… 
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