20 citations · 33 across the 7 of their papers we have counts for
7 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…
Type-I two-Higgs-doublet model and gravitational waves from domain walls bounded by strings
Bowen Fu, Anish Ghoshal, Stephen F. King +1
The spontaneous breaking of a symmetry via an intermediate discrete symmetry may yield a hybrid topological defect of \emph{domain walls bounded by cosmic strings}. The deca…
Gravitational Waves and Gravitino Mass in No-Scale Supergravity Inflation with Polonyi Term
Miguel Crispim Romão, Stephen F. King
We study a No-Scale supergravity inflation model which has a non-minimal deformation of the Kähler potential and a Wess-Zumino superpotential extended by the inclusion of a Polonyi…
Cosmic string gravitational waves from global symmetry breaking as a probe of the type I seesaw scale
Bowen Fu, Anish Ghoshal, Steve King
In type I seesaw models, the right-handed neutrinos are typically super-heavy, consistent with the generation of baryon asymmetry via standard leptogenesis. Primordial gravitationa…