From the 1 of 6 linked papers with an AI index.
6 papers
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…
The unavoidable de Sitter fate of a scale-invariant Universe
Chiara Cecchini, Massimiliano Rinaldi
We consider a very general scale-invariant scalar-tensor theory of gravity and its flat cosmological solutions. We show that any stable configuration with non-degenerate gravitatio…
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…
Implications of cosmologically coupled black holes for pulsar timing arrays
Marco CalzÃ, Francesco Gianesello, Massimiliano Rinaldi +1
It has been argued that realistic models of (singularity-free) black holes (BHs) embedded within an expanding Universe are coupled to the large-scale cosmological dynamics, with st…
Tracing cosmic stretch marks: probing scale invariance in the early Universe
Mariaveronica De Angelis, Chiara Cecchini, Massimiliano Rinaldi
This paper investigates a scale-invariant inflationary model characterized by a scalar field non-minimally coupled to gravity and a curvature term quadratic in the Ricci scalar. Th…
Testing scale-invariant inflation against cosmological data
Chiara Cecchini, Mariaveronica De Angelis, William Giarè +2
There is solid theoretical and observational motivation behind the idea of scale-invariance as a fundamental symmetry of Nature. We consider a recently proposed classically scale-i…