Euclidian 4d quantum gravity with a non-trivial measure term

2013/07/15 by J. Ambjorn, L. Glaser, A. Goerlich +1 · 1 citation
Physics and Astronomy · #hep-lat #gr-qc #hep-th

paper · pdf · doi:10.1007/jhep10(2013)100

24 pages and many figures. A few references added in v2

arxiv created 2013/07/15 · arxiv updated 2014/04/08

Abstract

We explore an extended coupling constant space of 4d regularized Euclidean quantum gravity, defined via the formalism of dynamical triangulations. We add a measure term which can also serve as a generalized higher curvature term and determine the phase diagram and the geometries dominating in the various regions. A first order phase transition line is observed, but no second order transition point is located. As a consequence we cannot attribute any continuum physics interpretation to the so-called crinkled phase of 4d dynamical triangulations.

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• Exploring Euclidean dynamical triangulations with a non-trivial measure term

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