A Lorentzian Cure for Euclidean Troubles

Ambjörn, Jan; Dasgupta, Arundhati; Jurkiewicz, Jerzy; Loll, Renate

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A Lorentzian Cure for Euclidean Troubles

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Dasgupta, Arundhati
Quantum Gravity & Unified Theories, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

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Ambjörn, J., Dasgupta, A., Jurkiewicz, J., & Loll, R. (2002). A Lorentzian Cure for Euclidean Troubles. Nuclear Physics B Proc. Suppl., 106, 977-979.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0013-54D7-E

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.