A new look at loop quantum gravity

By Carlo Rovelli. 2010

141 citations recorded by the source corpus.

I describe a possible perspective on the current state of loop quantum gravity, at the light of the developments in the past few years. I point out that a theory is now available, having a well-defined background-independent kinematics and a dynamics allowing transition amplitudes to be computed explicitly in different regimes. I emphasize the fact that the dynamics can be given in terms of a simple vertex function, largely determined by locality, diffeomorphism invariance and local Lorentz invariance. I emphasize the importance of approximations. I list open problems.

Subfields: Atomic and Molecular Physics, and Optics, Nuclear and High Energy Physics, Statistical and Nonlinear Physics

View Paper: https://www.semanticscholar.org/paper/99e36c3a66e39daa44c959c501cf847ecfdf6070