Domain structures in quantum graphity
  Quantum graphity offers the intriguing notion that space emerges in the low energy states of the spatial degrees of freedom of a dynamical lattice. Here we investigate metastable domain structures which are likely to exist in the low energy phase of lattice evolution. Through an annealing process we explore the formation of metastable defects at domain boundaries and the effects of domain structures on the propagation of bosons. We show that these structures should have observable background independent consequences including scattering, double imaging, and gravitational lensing-like effects. 
James Q. Quach, Chun-Hsu Su, Andrew M. Martin and Andrew D. Greentree
gr-qc cond-mat.stat-mech