# Light ray fluctuation and lattice refinement of simplicial quantum gravity

@inproceedings{Jia2022LightRF, title={Light ray fluctuation and lattice refinement of simplicial quantum gravity}, author={Ding Jia}, year={2022} }

In several approaches of non-perturbative quantum gravity, a major outstanding problem is to obtain results valid at the inﬁnite lattice reﬁnement limit. Working with Lorentzian simplicial quantum gravity, we compute light ray ﬂuctuation probabilities in 3D and 4D across different lattices. In a simpliﬁed reﬁned box model with the Einstein-Hilbert action, numerical results show that lattice reﬁnement does not simply suppress or simply enhance light ray ﬂuctuations, but actually drives very wide…

## One Citation

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