Theoretical models of the universe are valid only at large distances.
The properties of spacetime at ultrashort distances of the order of the Planck length are completely unknown since they have not been explored by any experiment.
The model illustrates that the world may have, at Planck distances, quite different properties from those predicted by string theorists.
In this model, matter creates defects in spacetime which generate curvature and all the effects of general relativity.
[3] The existence of a shortest length at the Planck level has interesting consequences for quantum physics at ultrahigh energies.