A Lorentzian cure for Euclidean troubles
J. Ambjorn, A. Dasgupta, J. Jurkiewicz, R. Loll
Abstract
There is strong evidence coming from Lorentzian dynamical triangulations that the unboundedness of the gravitational action is no obstacle to the construction of a well-defined non-perturbative path integral. In a continuum approach, a similar suppression of the conformal divergence comes about as the result of a non-trivial path-integral measure.
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