The Euclidean three-point function in loop and perturbative gravity
Abstract
We compute the leading order of the three-point function in loop quantum gravity, using the vertex expansion of the Euclidean version of the new spin foam dynamics, in the region of γ < 1. We find results consistent with Regge calculus in the limit γ → 0, j → ∞. We also compute the tree-level three-point function of perturbative quantum general relativity in position space and discuss the possibility of directly comparing the two results.
- Publication:
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Classical and Quantum Gravity
- Pub Date:
- September 2011
- DOI:
- 10.1088/0264-9381/28/17/175010
- arXiv:
- arXiv:1105.0566
- Bibcode:
- 2011CQGra..28q5010R
- Keywords:
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- General Relativity and Quantum Cosmology
- E-Print:
- 16 pages