Post-selection on a Chern-Simons soliton in minisuperspace quantum cosmology yields an accelerating trajectory from a free radiation Hamiltonian with zero cosmological constant.
Initial conditions and unitarity in unimodular quantum cosmology
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abstract
We consider quantization of the positive curvature Friedmann cosmology in the unimodular modification of Einstein's theory, in which the spacetime four-volume appears as an explicit time variable. The Hamiltonian admits self-adjoint extensions that give unitary evolution in the Hilbert space associated with the Schr\"odinger equation. The semiclassical estimate to the no-boundary wave function of Hartle and Hawking is found. If this estimate is accurate, there is a continuous flux of probability into the configuration space from vanishing three-volume, and the no-boundary wave function evolves nonunitarily. Generalizations of these results hold in a class of anisotropic cosmologies. (Talk given at the 5th Canadian Conference on General Relativity and Relativistic Astrophysics, Waterloo, Ontario, Canada, May 1993.)
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gr-qc 1years
2026 1verdicts
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Teleocosmology and quantum post-selection
Post-selection on a Chern-Simons soliton in minisuperspace quantum cosmology yields an accelerating trajectory from a free radiation Hamiltonian with zero cosmological constant.