Bimetric Truncations for Quantum Einstein Gravity and Asymptotic Safety

Details Bimetric Truncations for Quantum Einstein Gravity and Asymptotic Safety Bimetric Truncations for Quantum Einstein Gravity and Asymptotic Safety

2009-07-15

arxiv.org/abs/0907.2617v1

Annals Phys.325:785-815,2010

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

48 pages, 5 figures

Scientific paper

10.1016/j.aop.2009.11.009

In the average action approach to the quantization of gravity the fundamental requirement of "background independence" is met by actually introducing a background metric but leaving it completely arbitrary. The associated Wilsonian renormalization group defines a coarse graining flow on a theory space of functionals which, besides the dynamical metric, depend explicitly on the background metric. All solutions to the truncated flow equations known to date have a trivial background field dependence only, namely via the classical gauge fixing term. In this paper we analyze a number of conceptual issues related to the bimetric character of the gravitational average action and explore a first nontrivial bimetric truncation in the simplified setting of conformally reduced gravity. Possible implications for the Asymptotic Safety program and the cosmological constant problem are discussed in detail.

Affiliated with

Also associated with

No associations

Rating

Bimetric Truncations for Quantum Einstein Gravity and Asymptotic Safety does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Bimetric Truncations for Quantum Einstein Gravity and Asymptotic Safety, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bimetric Truncations for Quantum Einstein Gravity and Asymptotic Safety will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-364783