Universe before Planck time: a quantum gravity model

Padmanabhan, T. (1983) Universe before Planck time: a quantum gravity model Physical Review D - Particles, Fields, Gravitation and Cosmology, 28 (4). pp. 756-760. ISSN 1550-7998

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Official URL: http://prd.aps.org/abstract/PRD/v28/i4/p756_1

Related URL: http://dx.doi.org/10.1103/PhysRevD.28.756


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.

Item Type:Article
Source:Copyright of this article belongs to The American Physical Society.
ID Code:72372
Deposited On:29 Nov 2011 05:00
Last Modified:29 Nov 2011 05:00

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