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DARK AND LUMINOUS MATTER

Note: We consider "matter" as a metalanguage shortcut pointing to particular aspects of Gravity- and its equivalent Inertia Field. Cosmos is assumed to encompass two kinds of matter, the Dark and the Luminous, their respective ratio estimated as 0.96/0.04. On the other hand it is usually estimated that quarks and gluons combined to form baryons such as protons and neutrons at about 10**-6 seconds after the Big Bang. It seems reasonable to assume that the split of matter to dark and luminous should have happened shortly before this moment. Postulating that luminous and dark matter correspond respectively to the embedded and embedding SPACE of the Cosmos, a simple calculation results in the split time of 0.24*10**-6 seconds, which satisfies our above assumption: General Relativity structures Cosmos as observable 4d SPACE (equivalent to Gravity/Inertia Field) embedded in a 10d embedding, so far unobservable, SPACE. This structure, however, does not make sense before the formation of baryonic matter and at earlier time Cosmos may be approximated as a sphere of 2d surface "S" embedded in the 3d volume "V". The surface of a sphere of radius R; S=4 pi R**2 The enclosed volume: V=(4 pi R**3)/3 Compactness: K = S/V = 3/R According to our postulate K = 0.04/0.96 = 3/R thus R = 3*0.96/0.04 = 72m = 72*10**-3km Cosmos expanding at C, R has been reached at time To where R = CTo and To = R/C = 72*10**-3/3*10**5 = 0.24*10**-6 seconds

POSTFACE

The present is a first intuitive step towards a representation of the Cosmos in terms of unified GR's 4d SPACE with its embedding SPACE in a unique 10d SPACE.