Phase transition in quantum gravity

Details Phase transition in quantum gravity Phase transition in quantum gravity

1999-08-19

arxiv.org/abs/gr-qc/9908056v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

5 pages (Latex), 1 eps figure. For Proceedings of the 8th. Canadian Conference on General Relativity and Relativistic Astrophy

Scientific paper

10.1142/S0217732399001152

A fundamental problem with attempting to quantize general relativity is its perturbative non-renormalizability. However, this fact does not rule out the possibility that non-perturbative effects can be computed, at least in some approximation. We outline a quantum field theory calculation, based on general relativity as the classical theory, which implies a phase transition in quantum gravity. The order parameters are composite fields derived from spacetime metric functions. These are massless below a critical energy scale and become massive above it. There is a corresponding breaking of classical symmetry.

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