作者: Laurent Freidel , Artem Starodubtsev
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摘要: We recast the action principle of four dimensional General Relativity so that it becomes amenable for perturbation theory which doesn't break general covariance. The coupling constant dimensionless (G_{Newton} \Lambda) and extremely small 10^{-120}. give an expression generating functional theory. show partition function quantum can be expressed as expectation value a certain topologically invariant observable. This sets up framework in gravity studied perturbatively using techniques topological field