22 citations · 42 across the 12 of their papers we have counts for
12 papers
Microscopic entropy of de Sitter spacetime and entropic solution to the old cosmological constant problem
Mariano Cadoni, Lorenzo Herres, Lorenzo Orlando +1
We study the role of Weyl symmetry breaking in conformal gravity and the residual scale symmetry of Einstein gravity. The corresponding action is characterized by a dimensionless c…
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…
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…
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…
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…
Apparent horizons in cosmologically-embedded black holes
Mariano Cadoni, Mirko Pitzalis, Andrea Pierfrancesco Sanna
We present exact solutions for the cosmological embedding of a broad class of non-singular black holes, demonstrating that these objects exhibit an apparent horizon. The evolution…
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…
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…
Cosmological coupling of local gravitational systems
Mariano Cadoni, Mirko Pitzalis, Davi C. Rodrigues +1
We investigate the cosmological coupling of spherical, local astrophysical systems. We derive a general formula quantifying the cosmological coupling of the Misner-Sharp mass of th…
Scalar stars and lumps with (A)dS core
Mariano Cadoni, Mauro Oi, Mirko Pitzalis +1
We explore the possibility of embedding regular compact objects with (anti) de Sitter ((A)dS) core as solutions of Einstein's gravity minimally coupled to a real scalar field. We c…
Quasi-local masses and cosmological coupling of black holes and mimickers
Mariano Cadoni, Riccardo Murgia, Mirko Pitzalis +1
Motivated by the recent heated debate on whether the masses of local objects, such as compact stars or black holes (BHs), may be affected by the large-scale, cosmological dynamics,…
Cosmological and Wormhole Solutions in Low-Energy Effective String Theory
Mariano Cadoni, Marco Cavaglia
We derive and study a class of cosmological and wormhole solutions of low-energy effective string field theory. We consider a general four-dimensional string effective action where…