Quantum flatness in two-dimensional quantum gravity

  title={Quantum flatness in two-dimensional quantum gravity},
  author={J. Brunekreef and R. Loll},
  journal={Physical Review D},
Flatness – the absence of spacetime curvature – is a well-understood property of macroscopic, classical spacetimes in general relativity. The same cannot be said about the concepts of curvature and flatness in nonperturbative quantum gravity, where the microscopic structure of spacetime is not describable in terms of small fluctuations around a fixed background geometry. An interesting case are two-dimensional models of quantum gravity, which lack a classical limit and therefore are maximally… 


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    Living reviews in relativity
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