4 papers
Whispers of Supergravity in Gravitational Wave Backgrounds: Determining the Gravitino Mass from Cosmic Thermal History
Angus Spalding, Stephen F. King
Gravitino masses above the electroweak scale provide the simplest solution to the gravitino problem, but such large mass scales lie far beyond the reach of collider experiments. We…
Domain Walls in Flavour Models
Bowen Fu, Stephen F. King, Luca Marsili +2
The spontaneous breaking of an flavour symmetry, often used to predict leptonic mixing, can lead to the formation of domain walls which can annihilate and generate a stochast…
Non-Abelian Domain Walls and Gravitational Waves
Bowen Fu, Stephen F. King, Luca Marsili +3
We investigate the properties of domain walls arising from non-Abelian discrete symmetries, which we refer to as non-Abelian domain walls. We focus on , one of the most common…
Primordial Black Holes and Scalar-induced Gravitational Waves in Sneutrino Hybrid Inflation
Adeela Afzal, Anish Ghoshal, Stephen F. King
We investigate the possibility that primordial black holes (PBHs) can be formed from large curvature perturbations generated during the waterfall phase transition in a supersymmetr…