Towards the density of matter

Abstract

We discuss some visible analogies of mapping of the density of matter field which has been observed in Universe and in particular in micro-mechanical granular materials. In both of the mentioned global classes of physical systems the same known initial problem exists: the local density field is insufficiently defined. Several structural characters which are in common in those, quite differently scaled systems (like specific clusterisation), are outlined. The observed external similarity of clustering, characterized by the formation of specific filamentous clusters, both in granular matter and in the distribution of matter in the Universe allows the model level to use the granular phase parameterization scenario (compaction parameter instead of density) in the study of distribution of matter in the Universe.