Cosmology with Two Compactification Scales

Dipartimento di Fisica dell’Università di Genova, Istituto NazionaJe di Fisica Nucleare, Sezione di Genova Via Dodecaneso 33, 16146 Genova, Italy

Published Date: March 31, 2000

Abstract

We consider a (4 + d)-dimensional spacetime broken up into a (4 - n)-dimensional Minkowski spacetime (where n goes from 1 to 3) and a compact (n + d)-dimensional manifold. At the present time the n compactification radii are of the order of the Universe size, while the other d compactification radii are of the order of the Planck length.