asymptotic safety

Georg v. Hippel blogs about the Lattice 2011 conference and he mentioned a talk by Jack Laiho on Asymptotic Safety and Quantum Gravity.

There is already a paper about that on the arXiv. The main idea is that three coupling parameters are needed in the lattice model and they consider dynamical triangulation in the Euclidean sector with an additional measure term, which comes with the third coupling parameter. The hope is to find a tri-critical point (with 2nd order phase transition) as a candidate for the continuum limit in the asymptotic safety scenario.