6 papers
Cosmologically Coupled Black Holes with Regular Horizons
Mariano Cadoni, Leonardo de Lima, Mirko Pitzalis +2
We present the most general and exact solution of Einstein's gravity sourced by an anisotropic fluid describing the cosmological embedding (CE) of a static and spherically-symmetri…
The Role of Conceptual Problem Solving in Learning Physics: A Study in a General Relativity University Course
Matteo Tuveri, Andrea Pierfrancesco Sanna, Mariano Cadoni
Effective physics learning, especially in complex topics, requires balancing mathematical formalism with conceptual understanding. Conceptual problem-solving involves connecting ma…
Stable Wormholes in Conformal Gravity
Mariano Cadoni, Leonardo Modesto, Mirko Pitzalis +1
We present a class of Lorentzian traversable wormholes in conformal gravity, constructed via Weyl rescaling of Minkowski spacetime. As a result, these wormholes are solutions of ev…
Effective Quantum Spacetimes from Functional Renormalization Group
Alfio Bonanno, Mariano Cadoni, Mirko Pitzalis +1
Using the Functional Renormalization Group approach we construct effective quantum spacetime geometries by self-consistently deforming the classical Schwarzschild-de Sitter black-h…
Deriving the paradox: original derivation of Hawking radiation
Mariano Cadoni, Salvatore Mignemi, Mirko Pitzalis +1
We revisit Hawking's original derivation of the evaporation process in a non-stationary spacetime, presenting it in a clear and pedagogical manner, with a focus on the spherical co…
Nucleation of de Sitter from the anti de Sitter spacetime in scalar field models
Mariano Cadoni, Mirko Pitzalis, Andrea P. Sanna
We show that, in the framework of Einstein-scalar gravity, the gravitational coupling can drive the nucleation of the de Sitter (dS) spacetime from an anti de Sitter (AdS) one. Thi…