Large quasar group, a massive collection of black holes and the largest known object in the universe
Yet another phenomenon that Sachs' theory can accommodate that standard cosmology might not is the Huge-LQG large quasar group, since general relativity does not presuppose homogeneity or isotropy, i.e., the cosmological principle.
Huge-LQG |
Of interest in this connection would be to see whether the LQG analogue of Minkowski spacetime breaks or preserves global Lorentz invariance, and Carlo Rovelli and coworkers have recently been investigating the Minkowski state of LQG using spin-foam techniques.