Cosmic clustering

@article{Anninos2016CosmicC,
  title={Cosmic clustering},
  author={Dionysios Anninos and Frederik Denef},
  journal={Journal of High Energy Physics},
  year={2016},
  volume={2016},
  pages={1-12}
}
A bstractWe show that the late time Hartle-Hawking wave function for a free massless scalar in a fixed de Sitter background encodes a sharp ultrametric structure for the standard Euclidean distance on the space of field configurations. This implies a hierarchical, tree-like organization of the state space, reflecting its genesis as a branched diffusion process. An equivalent mathematical structure organizes the state space of the Sherrington-Kirkpatrick model of a spin glass. 

Figures from this paper.