| Induced Gravity from Theory Space | | | Nahomi Kan, Kiyoshi Shiraishi | | | Yamaguchi U. | | |
Progress of Theoretical Physics Volume 111, Number 5, pp. 745-755 [gr-qc/0310055] | | |
Abstract: The mass spectrum of a model constructed in a theory space is expressed in terms of eigenvalues of the Laplacian on the graph structure of the theory space. The nature of the one-loop UV divergence in the vacuum energy is then determined by only the degree matrix of the graph. Using these facts, we construct models of induced gravity that do not exhibit quadratic divergences at the one-loop level. | | |
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