Proper-time regulators and RG flow in QEG

Details Proper-time regulators and RG flow in QEG Proper-time regulators and RG flow in QEG

Mar 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aipc..751..162b&link_type=abstract

GENERAL RELATIVITY AND GRAVITATIONAL PHYSICS: 16th SIGRAV Conference on General Relativity and Gravitational Physics. AIP Confe

Physics

Quantum Gravity, Classical General Relativity

Scientific paper

A proper time renormalization group equation for Quantum Einstein Gravity is studied in the Einstein-Hilbert truncation and its predictions are compared to those of the conceptually different exact renormalization group equation of the effective average action. A smooth infrared regulator of a special type is known to give rise to extremely precise critical exponents in scalar theories. In particular the proper time equation, too, predicts the existence of a non-Gaussian fixed point as is necessary for the conjectured nonperturbative renormalizability of Quantum Einstein Gravity.

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