We review the role that infinite-dimensional symmetries arising at the boundary of
asymptotically flat spacetimes play in the context of the celestial holography program. Once …

Quantum gravity is the missing piece in our understanding of the fundamental interactions
today. Given recent observational breakthroughs in gravity, providing a quantum theory for …

The gravitational asymptotic safety program envisions a high-energy completion of the
gravitational interactions by an interacting renormalization group fixed point, the Reuter fixed …

The semi-classical regime of fractional quantum cosmology has been discussed based on
the Wheeler-DeWitt equation and ADM-Hamiltonian formalism. Fractionality has been …

We revisit the predictions for the duration of the inflationary phase after the bounce in loop
quantum cosmology. We present our analysis for different classes of inflationary potentials …

In the present article we review the work carried out by us and collaborators on
supersymmetric quantum cosmology, noncommutative quantum cosmology and the …

Correlation functions are ubiquitous tools in quantum field theory from both a fundamental
and a practical point of view. However, up to now their use in theories of quantum gravity …

The Weyl curvature constitutes the radiative sector of the Riemann curvature tensor and
gives a measure of the anisotropy and inhomogeneities of spacetime. Penrose's 1979 Weyl …

With a few exceptions, physics theories are based in a conception of time and space; our
two major theories, general relativity, and quantum field theory, differ in their conceptions …

A good hundred years after the necessity for a quantum theory of gravity was acknowledged
by Albert Einstein, the search for it continues to be an ongoing endeavour. Nevertheless, the …