We argue that the well-known beta functions of quadratic gravity do not correspond to the
physical dependence of scattering amplitudes on external momenta, and derive the correct …

In the context of weak-field metric-affine (ie Palatini) gravity near Minkowski spacetime, we
compute the particle spectra in the simultaneous presence of all independent contractions …

A bstract We investigate the integrability anomalies arising in the self-dual sectors of gravity
and Yang-Mills theory, focusing on their connection to both the chiral anomaly and the trace …

A bstract We propose a new method to account for quantum-gravitational effects in
cosmological and black hole spacetimes. At the core of our construction is the “decoupling …

In this chapter we review the recent developments of realizing R 2-like inflation in the
framework of a most general UV nonlocal extension of Einstein's general theory of relativity …

We consider a proposed alternative to quantum gravity, in which the spacetime metric is
treated as classical, even while matter fields remain quantum. Consistency of the theory …

One of the obstacles to reconciling quantum theory with general relativity, is constructing a
theory which is both consistent with observation, and and gives finite answers at high …

A bstract A well-defined variational principle for gravitational actions typically requires to
cancel boundary terms produced by the variation of the bulk action with a suitable set of …

We explore the properties of a simple renormalizable shift-symmetric model with a higher-
derivative kinetic energy and quartic-derivative coupling that can serve as a toy model for …

A non-perturbative and background-independent quantum formulation of quadratic gravity is
provided. A canonical quantization procedure introduced in previous works, named after …