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Isometric Evolution in de Sitter Quantum Gravity

Jordan Cotler1, Kristan Jensen2

  • 1Society of Fellows, Harvard University, Cambridge, Massachusetts 02138, USA.

Physical Review Letters
|December 10, 2023
PubMed
Summary

Time evolution in de Sitter quantum gravity is isometric, not unitary. States evolving to a crunch are projected out, limiting bulk physics knowledge for deducing the de Sitter S matrix.

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