Making the gravitational path integral more Lorentzian, or: Life beyond Liouville gravity

Details Making the gravitational path integral more Lorentzian, or: Life beyond Liouville gravity Making the gravitational path integral more Lorentzian, or: Life beyond Liouville gravity

1999-10-28

arxiv.org/abs/hep-th/9910232v1

Nucl.Phys.Proc.Suppl. 88 (2000) 241-244

Physics

High Energy Physics

High Energy Physics - Theory

4 pages, 2 figures (postscript), uses espcrc2.sty

Scientific paper

10.1016/S0920-5632(00)00776-3

In two space-time dimensions, there is a theory of Lorentzian quantum gravity which can be defined by a rigorous, non-perturbative path integral and is inequivalent to the well-known theory of (Euclidean) quantum Liouville gravity. It has a number of appealing features: i) its quantum geometry is non-fractal, ii) it remains consistent when coupled to matter, even beyond the c=1 barrier, iii) it is closer to canonical quantization approaches than previous path-integral formulations, and iv) its construction generalizes to higher dimensions.

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