[School of Natural Sciences PhD Scholarships] Higgstory of the Universe

About the project

About the Project The Higgs boson might hold the answer to the deepest questions in fundamental physics. Current measurements at the Large Hadron Collider (LHC) create unprecedented sensitivity to deviations from the Standard Model. Such deviations provide crucial clues not only about new particle physics, but also about the evolution of the early Universe. This PhD project will explore the connection between Higgs physics, effective field theory (EFT), CP violation, electroweak phase transitions and inflation. The central idea is to use EFT as a common language linking collider measurements to cosmological dynamics. A major objective will be to develop state-of-the-art precision predictions for Higgs-sector observables for new physics, with particular emphasis on theoretical robustness and experimental sensitivity. The student will investigate how modern analysis techniques, including AI-assisted optimisation, can be used to identify observables with enhanced sensitivity to new physics. Particular attention will be given to CP-violating Higgs interactions and to non-linear realisations of electroweak symmetry breaking. These effects are especially interesting because they can leave correlated signatures across collider experiments and cosmology. The project will study how collider constraints can be translated into statements about the thermal history of the Universe, including scenarios in which the electroweak phase transition becomes first order and may generate observable gravitational-wave signals. A further strand of the project will investigate how these TeV-scale baryogenesis scenarios can be distinguished from models in which the matter–antimatter asymmetry is generated during inflation or reheating. This will involve studying Higgs and gravitational dynamics during the inflationary epoch and the subsequent evolution of plasma and magnetic-field correlations. The project will combine analytical and computational approaches. Techniques include quantum field theory, EFT matching, collider simulation, statistical interpretation of experimental data, finite-temperature field theory, effective-potential calculations, numerical evolution of cosmological systems and magnetohydrodynamic modelling. Depending on the direction of the project, the student may also work with symbolic algebra tools, Monte-Carlo event generators and dedicated numerical packages for phase-transition and cosmological dynamics. The successful candidate will receive close, regular one-to-one supervision and will be encouraged to collaborate on publications from an early stage. They will participate actively in the local particle theory group and interact with a broad international network of collaborators working on Higgs physics, EFT and cosmology. Training will be provided in advanced quantum field theory, collider phenomenology, computational methods, research software and scientific communication. The student will also benefit from formal training and professional development activities organised through the FSE Doctoral Academy. We envision several publishable research outputs. This project would suit a student with a strong interest and background in theoretical particle physics, collider phenomenology and cosmology. A solid background in quantum mechanics and particle physics is desirable, while prior experience with quantum field theory or scientific programming would be advantageous but is not essential. This project is expected to start in September 2027. Before you apply: We strongly recommend that you contact the supervisors for this project before you apply. How to apply: To be considered for this project you must complete a formal application through our online application portal. If you already have an applicant account this link will directly open an application for PhD School of Natural Sciences Scholarships . If you don’t already have an applicant account, please follow the instructions here . When applying, please specify the full title and supervisor/s of the project, details of your previous study, and names and contact details of two referees. You must also upload a Supporting Statement describing your motivation to apply to the project, your CV and transcripts of awarded and in-progress university qualifications . Please note late or incomplete applications will not be considered. Equality, diversity and inclusion are fundamental to the success of The University of Manchester and central to all our activities. A diverse research community strengthens creativity, productivity and quality, while increasing the societal and economic impact of our work. We welcome applicants from all career paths, backgrounds and sections of the community, regardless of age, disability, ethnicity, gender, gender expression, sexual orientation or transgender status. We welcome applications from candidates returning to study after a career break or experience in other roles. Flexible study arrangements may be available, including part-time study at 50%, 60% or 80%, subject to the requirements of the project and funder. Eligibility : The standard academic entry requirement for this PhD is an upper second-class (2:1) honours degree in a discipline directly relevant to the PhD (or international equivalent) OR any upper-second class (2:1) honours degree and a Master’s degree at merit in a discipline directly relevant to the PhD (or international equivalent). This project will remain open until filled. If your application is submitted by 1 st November 2026, you can expect a decision by 18 th December 2026. If your application is submitted by 15 th January 2027, you can expect a decision by 30 th March 2027. Self or externally funded students can also be considered for this project. FSESoNS

Research areas