Multi-graviton theory in vierbein formalism

Abstract

Recently, multi-graviton theory on a simple closed circuit graph corresponding to the $S^1$ 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 non-linear theory based on the vierbein formalism and study cosmological solutions.

4 pages, no figure. A presentation given at JGRG17 (Nagoya, Japan), to appear in the proceedings