• Corpus ID: 251468172

Light ray fluctuation and lattice refinement of simplicial quantum gravity

  title={Light ray fluctuation and lattice refinement of simplicial quantum gravity},
  author={Ding Jia},
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… 
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