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Dark matter, baryogenesis and inflation in BSM particle theories

Lead Research Organisation: Lancaster University
Department Name: Physics

Abstract

The project will investigate new developments in particle theory to determine their impact on cosmology, with particular focus on their compatibility with inflation and their consequences for observables including the dark matter and baryon densities. The initial project will focus on axions and axion-like particles (ALPs) extensions of the Standard Model. It will investigate the metastability of the Standard Model Higgs potential in the context of a minimal KSVZ axion model. It will also investigate the evolution of the Higgs-axion system during and after inflation. The project will later move on to investigate the cosmology of other ALP and BSM particle theories.

Publications

10 25 50
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Lloyd-Stubbs A (2020) Sub-Planckian ? 2 inflation in the Palatini formulation of gravity with an R 2 term in Physical Review D

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Lloyd-Stubbs A (2019) KSVZ axion model with quasidegenerate minima: A unified model for dark matter and dark energy in Physical Review D

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Lloyd-Stubbs A (2022) Q-balls in nonminimally coupled Palatini inflation and their implications for cosmology in Physical Review D

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Lloyd-Stubbs A (2021) Minimal approach to baryogenesis via the Affleck-Dine mechanism and inflaton mass terms in Physical Review D

Studentship Projects

Project Reference Relationship Related To Start End Student Name
ST/N504385/1 30/09/2015 30/03/2021
1957445 Studentship ST/N504385/1 30/09/2017 29/09/2021 Amy LLoyd-Stubbs