| Classical and Quantum Cosmology of Multigravity | | | Teruki Hanada, Koichiro Kobayashi, Kazuhiko Shinoda, Kiyoshi Shiraishi | | | Yamaguchi University | | |
Classical and Quantum Gravity 27, issue 22, 225010 (13pp) [1004.5435] | | |
Abstract: Recently, a multigraviton theory on a simple closed circuit graph corresponding to the discretization of $S^1$ 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. | | |
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