10 papers
Black Hole Memory Burden and its Signatures in Gravitational Waves from Mergers
Gia Dvali, Michael Zantedeschi, Sebastian Zell
Swift memory burden (MB) implies that the information stored in a black hole (BH) can modify its classical dynamics when the BH is perturbed. This influences the gravitational wave…
On the predictivity of axion dark matter in the presence of Peccei-Quinn breaking
Michael Zantedeschi
It is shown that the post-inflationary quantum chromodynamics (QCD) axion need not lead to a unique one-parameter prediction for the dark matter abundance whenever small explicit P…
Cosmological Implications of the Slingshot Effect: Gravitational Waves, Primordial Black Holes and Dark Matter
Maximilian Bachmaier, Gia Dvali, Juan Sebastián Valbuena-Bermúdez +1
In this paper, we explore the implications of the so-called slingshot effect. It represents a rather general phenomenon occurring when a localized source, such as a monopole, quark…
Ultralight Black Holes as Sources of High-Energy Particles
Michael Zantedeschi, Luca Visinelli
The \textit{memory burden} effect, the idea that the amount of information stored within a system contributes to its stabilization, is particularly relevant for systems with a larg…
The fast, the slow and the merging: probes of evaporating memory burdened PBHs
Alessandro Dondarini, Giulio Marino, Paolo Panci +1
The so-called memory-burden effect implies that evaporating Primordial Black Holes (PBHs) inevitably stabilize before complete decay. This stabilization opens a new mass window for…
A minimal Pati-Salam theory: from cosmic defects to gravitational waves and colliders
Goran SenjanoviÄ, Michael Zantedeschi
We discuss a minimal renormalizable Pati-Salam theory based on the gauge group, with unification scale Higgs multiplet…