Fourth-derivative relativistic quantum gravity

S.A. Larin, V.A. Matveev, V.A. Rubakov, D.G. Levkov, Y.V. Zhezher, V.E. Volkova
2018 EPJ Web of Conferences  
We consider relativistic quantum gravity with the action including terms quadratic in the curvature tensor. This model is known to be renormalizable. We demonstrate that the model is also unitary. New expressions for the corresponding Lagrangian and the graviton propagator within dimensional regularization are derived. We argue that the considered model is the proper candidate for the fundamental quantum theory of gravitation.
doi:10.1051/epjconf/201819107002 fatcat:tp4l2agg5rf7phzcxus46agf44