# Crossing the c=1 barrier in 2d Lorentzian quantum gravity

@article{Ambjorn1999CrossingTC,
title={Crossing the c=1 barrier in 2d Lorentzian quantum gravity},
author={Jan Ambjorn and Konstantinos Anagnostopoulos and R Loll},
journal={Acta Crystallographica Section E-structure Reports Online},
year={1999}
}
• Published 17 September 1999
• Physics
• Acta Crystallographica Section E-structure Reports Online
In an extension of earlier work we investigate the behaviour of two-dimensional Lorentzian quantum gravity under coupling to a conformal field theory with c > 1. This is done by analyzing numerically a system of eight Ising models (corresponding to c=4) coupled to dynamically triangulated Lorentzian ge- ometries. It is known that a single Ising model couples weakly to Lorentzian quantum gravity, in the sense that the Hausdorff dimension of the ensemble of two-geometries is two (as in pure…

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