299 citations · 417 across the 9 of their papers we have counts for
9 papers
Primordial spectra from modified Bekenstein-Hawking entropy law
Marco de Cesare, Giulia Gubitosi, Varun Kushwaha
Many approaches to quantum gravity predict logarithmic corrections to the Bekenstein-Hawking entropy. Within the spacetime-thermodynamic description of gravity, such corrections le…
Scalar field scattering in a Schwarzschild-de Sitter geometry
Marco de Cesare, Marcello Miranda, Achilleas P. Porfyriadis
We solve analytically the low-frequency s-wave dynamics of a massless scalar field propagating on a Schwarzschild-de Sitter black hole background. A rigorous application of the met…
The CosmoVerse White Paper: Addressing observational tensions in cosmology with systematics and fundamental physics
Eleonora Di Valentino, Jackson Levi Said, Adam Riess +533
The standard model of cosmology has provided a good phenomenological description of a wide range of observations both at astrophysical and cosmological scales for several decades.…
Connecting Gravitational Perturbations: from Bertotti-Robinson to Extreme Reissner-Nordstrom
Marco de Cesare, Roberto Oliveri, Achilleas P. Porfyriadis
We study spherically symmetric spacetime perturbations induced by a neutral scalar in the near-horizon region of extreme Reissner-Nordstrom black holes. For the unperturbed black h…
Cosmological evolution from modified Bekenstein entropy law
Marco de Cesare, Giulia Gubitosi
We study the dynamics of the homogeneous and isotropic cosmological background in the recently proposed ``quantum phenomenological gravitational dynamics'', characterised by logari…
Limiting curvature mimetic gravity for group field theory condensates
Marco de Cesare
Nonsingular bouncing cosmologies are realized in limiting curvature mimetic gravity by means of a multi-valued potential depending on the d'Alembertian of a scalar field…
Cosmological consequences of Quantum Gravity proposals
Marco de Cesare
In this thesis, we study the implications of Quantum Gravity models for the dynamics of spacetime and the ensuing departures from classical General Relativity. The main focus is on…
Dynamics of anisotropies close to a cosmological bounce in quantum gravity
Marco de Cesare, Daniele Oriti, Andreas G. A. Pithis +1
We study the dynamics of perturbations representing deviations from perfect isotropy in the context of the emergent cosmology obtained from the group field theory formalism for qua…
Cosmological implications of interacting Group Field Theory models: cyclic Universe and accelerated expansion
Marco de Cesare, Andreas G. A. Pithis, Mairi Sakellariadou
We study the cosmological implications of interactions between spacetime quanta in the Group Field Theory (GFT) approach to Quantum Gravity from a phenomenological perspective. Our…