A lattice bosonic model as a quantum theory of gravity

Abstract

A local quantum bosonic model on a lattice is constructed whose low energy excitations are gravitons described by linearized Einstein action. Thus the bosonic model is a quantum theory of gravity, at least at the linear level. We find that the compactification and the discretization of metric tenor are crucial in obtaining a quantum theory of gravity.

arXiv comment4 pages. RevTeX4. Homepage http://dao.mit.edu/~wen

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