11 papers
Stochastic Tsunamis: Diffuse Scalar Background from Black Hole Formation
Arturo de Giorgi, Joerg Jaeckel
The authors suggest that the abrupt disappearance of a static scalar field when massive stars collapse into black holes generates bursts of scalar radiation, which accumulate over…
LHC Constraints on Resonant Kaluza-Klein Gravitons
Arturo de Giorgi, Matteo Marcoli, Federico Silvetti
The paper updates LHC limits on heavy spin‑2 Kaluza‑Klein gravitons by analyzing both single‑resonance and full‑tower signals, showing that including the entire graviton tower stre…
Neutrino Constraints on Scalar-Tensor Gravity
Arturo de Giorgi, Ivan Martinez Soler, Sergio Sevillano Muñoz
In this work, we derive novel constraints on scalar-tensor theories from neutrino physics. Spatial variations of the background scalar field effectively generate density and positi…
Thermal Metastable Strings in One-Scale Models and Gravitational Waves
Arturo de Giorgi, James Ingoldby, Valentin V. Khoze +1
Metastable cosmic strings provide a cosmological interpretation of the nanohertz stochastic gravitational wave background reported by Pulsar Timing Array (PTA) experiments. We revi…
The Majoron Cosmological Window: Dark Matter and Thermal Leptogenesis
Arturo de Giorgi, Daniel Naredo-Tuero, Xavier Ponce DÃaz
The majoron is the Nambu-Goldstone boson associated with the spontaneous breaking of a global symmetry. Remarkably, the minimal majoron framework can simultaneously address t…
WISPedia -- the WISPs Encyclopedia
Conrado Albertus, Francesca Chadha-Day, Arturo de Giorgi +8
The Weakly-Interacting Slim Particle encyclopedia (WISPedia) is a comprehensive reference work dedicated to the systematic compilation of theoretical models, Effective Field Theori…