Phys. Rev. D 28, 756–760 (1983)Universe before Planck time: A quantum gravity modelReceived 20 October 1982; published in the issue dated 15 August 1983 A model for quantum gravity can be constructed by treating the conformal degree of freedom of spacetime as a quantum variable. An isotropic, homogeneous cosmological solution in this quantum gravity model is presented. The spacetime is nonsingular for all the three possible values of three-space curvature, and agrees with the classical solution for time scales larger than the Planck time scale. A possibility of quantum fluctuations creating the matter in the universe is suggested. © 1983 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevD.28.756
DOI:
10.1103/PhysRevD.28.756
PACS:
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