Parity and reality properties of the EPRL spinfoam

Details Parity and reality properties of the EPRL spinfoam Parity and reality properties of the EPRL spinfoam

2011-09-19

arxiv.org/abs/1109.3946v3

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

24 pages, 2 figures; Python code included in ancillary files; v3: added figures and elaborated some of the arguments

Scientific paper

We study the parity behavior of the Lorentzian EPRL spinfoam model. We demonstrate that the vertex amplitude does not depend on the sign of the Immirzi parameter. We present numerical results for the transition amplitude and the graviton propagator in the large-spin 4-simplex approximation. The results suggest a simple relation between the contributions of the two parity-related critical points. Finally, we observe that the graviton propagator is not invariant under parity-odd permutations of equivalent nodes. Thus, the Lorentzian model has the same chirality problem as the Euclidean.

Affiliated with

Also associated with

No associations

Rating

Parity and reality properties of the EPRL spinfoam 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 Parity and reality properties of the EPRL spinfoam, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Parity and reality properties of the EPRL spinfoam will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-96287