My paper with Marco Calzà and Max Rinaldi, where we study Hawking radiation from regular black holes in the presence of a non-minimal scalar-curvature coupling (see this earlier news item), has been accepted for publication without changes in PRD! You can read the preprint version of our paper on arXiv: 2510.12257.
Hawking radiation from regular black holes
New paper with Marco Calzà and Max Rinaldi out today, making it yet one more paper 100% produced within the Theoretical Gravitation and Cosmology Group led by myself and Max! We study the issue of Hawking radiation from regular black holes (BHs): most, if not all, of the regular BH solutions usually studied are non-vacuum solutions, i.e. their Ricci scalar R is non-zero. In this case a possible non-minimal coupling of scalar fields to curvature, strongly motivated by QFT in curved space-time considerations, can become relevant, yet has almost always been ignored. What we showed is that including this non-minimal coupling can drastically alter the resulting Hawking radiation spectrum, even by orders of magnitude, leading to potentially observable effects. You can read our results in the preprint we just posted on arXiv: 2510.12257.
