MICROCOSMOS AND MACROCOSMOS - A LOOK AT THESE 2 UNIVERSES IN A UNIFIED WAY

An extension of the MIT bag model, developed to describe the strong in teraction inside the hadronic matter (nucleons), is proposed as a mean s to account for the confinement of matter in the universe. The basic hypotheses of the MIT bag model are worked out in a very simplified wa y and are also translated in terms of the gravitational force. We call the nucleon ''microcosmos'' and the bag-universe ''macrocosmos.'' We have found a vacuum pressure of 10(-15) atm at the boundary of the bag -universe as compared with a pressure of 10(29) atm at the boundary of the nucleon. Both universes are also analyzed in the light of Sciama' s theory of inertia, which links the inertial mass of a body to its in teraction with the rest of the universe. One of the consequences of th is work is that the Weinberg mass can be interpreted as a threshold ma ss, namely the mass where the frequency of the small oscillations of a particle coupled to the universe matches its de Broglie frequency. Fi nally, we estimate an averaged density of matter in the universe, corr esponding to 3/4 of the critical or closure density.