Classical and Quantum Cosmology of Multigravity
arXiv:1004.5435 · doi:10.1088/0264-9381/27/22/225010
Abstract
Recently, a multigraviton theory on a simple closed circuit graph corresponding to the discretization of compactification of the Kaluza-Klein (KK) theory has been considered. In the present paper, we extend this theory to that on a general graph and study what modes of particles are included. Furthermore, we generalize it in a possible nonlinear theory based on the vierbein formalism and study classical and quantum cosmological solutions in the theory. We found that scale factors in a solution for this theory repeat acceleration and deceleration.
17 pages, 15 figures, RevTeX4.1, revised version
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