From the 1 of 9 linked papers with an AI index.
9 papers
Hawking emission of massive vector fields by Kerr black holes
Marco CalzÃ, Miguel Faria, Yuber F. Perez-Gonzalez +1
We compute, for the first time, the Hawking emission spectrum of massive vector (Proca) fields by spinning Kerr black holes, determining the associated greybody factors and the res…
Evaporating cosmologically coupled black holes
Marco CalzÃ, Davide Pedrotti, Massimiliano Rinaldi +1
The paper investigates black holes whose masses evolve with the cosmic expansion, incorporating Hawking radiation via a quasi‑adiabatic approach, and shows that cosmological coupli…
Primordial regular black holes as all the dark matter. III. Covariant canonical quantum gravity models
Marco CalzÃ, Davide Pedrotti, Guan-Wen Yuan +1
In earlier companion papers, we showed that non-singular primordial black holes (PBHs) could account for all the dark matter (DM) over a significantly wider mass range compared to…
Importance of being nonminimally coupled: Scalar Hawking radiation from regular black holes
Marco CalzÃ, Massimiliano Rinaldi, Sunny Vagnozzi
In curved space-time, a scalar field is generically expected to couple to curvature, via a coupling of the form . Yet in the study of Hawking emission from regular bl…
Machine Learning-Based Analytical Expressions for Gray-Body Factors and Application to Primordial Black Holes
Guan-Wen Yuan, Marco CalzÃ, Davide Pedrotti
Symbolic Regression (SR) is a machine learning approach that explores the space of mathematical expressions to identify those that best fit a given dataset, balancing both accuracy…
Trinity of black hole correspondences: Shadows, quasinormal modes, graybody factors, and cautionary remarks
Davide Pedrotti, Marco CalzÃ
Correspondences between apparently distant concepts are ubiquitous in theoretical physics. In the context of black holes (BHs), quasinormal modes (QNMs) were shown to be linked to…