activity
19962023
most citedGauge Singlet Scalars as Cold Dark Matter

987 citations · 4.2k across the 84 of their papers we have counts for

collaborators

84 papers

hep-ph2023

Higgs Inflation via the Metastable Standard Model Potential, Generalised Renormalisation Frame Prescriptions and Predictions for Primordial Gravitational Waves

J. McDonald

Higgs Inflation via a metastable Standard Model Higgs Potential is possible if the effective Planck mass in the Jordan frame increases after inflation ends. Here we consider the pr…

hep-ph2022★ 2 cited

Leptogenesis via Inflaton Mass Terms in Non-Minimally Coupled Inflation

Kit Lloyd-Stubbs, John McDonald

We consider a model of baryogenesis based on adding lepton number-violating quadratic mass terms to the inflaton potential of a non-minimally coupled inflation model. The -viola…

hep-ph2022

Higgs Inflation Using the Unstable Standard Model Potential

John McDonald

It is likely that the Higgs potential of the Standard Model is unstable, turning negative at GeV. Here we consider whether it is possible to have Higgs Inflation…

astro-ph.CO2021★ 8 cited

General Analytical Conditions for Inflaton Fragmentation: Quick and Easy Tests for its Occurrence

Jinsu Kim, John McDonald

Understanding the physics of inflaton condensate fragmentation in the early Universe is crucial as the existence of fragments in the form of non-topological solitons (oscillons or…

astro-ph.CO2021★ 50 cited

Towards Robust Constraints on Axion Dark Matter using PSR J1745-2900

R. A. Battye, J. Darling, J. McDonald +1

We apply novel, recently developed plasma ray-tracing techniques to model the propagation of radio photons produced by axion dark matter in neutron star magnetospheres and combine…

hep-ph2020★ 24 cited

A Minimal Approach to Baryogenesis via Affleck-Dine and Inflaton Mass Terms

Amy Lloyd-Stubbs, John McDonald

We present a minimal approach to the generation of the baryon () asymmetry of the Universe, in which the asymmetry is generated in a complex inflaton condensate via -violatin…