Gauge fixing in causal dynamical triangulations. (English) Zbl 1109.83303
Summary: We relax the definition of the Ambjørn–Loll causal dynamical triangulation model in \(1+1\) dimensions to allow for a varying lapse. We show that, as long as the spatially averaged lapse is constant in time, the physical observables are unchanged in the continuum limit. This supports the claim that the time slicing of the model is the result of a gauge fixing, rather than a physical preferred time slicing.
MSC:
| 83C27 | Lattice gravity, Regge calculus and other discrete methods in general relativity and gravitational theory |
References:
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