Stephen R. Green

Stephen R. Green is a UKRI Future Leaders Fellow and theoretical physicist based at the University of Nottingham’s School of Mathematical Sciences, where his research focuses on gravitational waves, black hole perturbation theory, and machine-learning-enhanced data analysis.

Education:

• PhD in Physics, 2012 – University of Chicago
• SM in Physical Sciences, 2006 – University of Chicago
• BSc in Mathematics and Physics, 2005 – University of Toronto

Research Interests:

Green’s research integrates advanced mathematical techniques with cutting-edge machine-learning methodologies to address fundamental questions in gravitational physics. His primary focus lies in black hole perturbation theory, particularly the nonlinear behavior of perturbations around Kerr black holes, and the development of probabilistic deep-learning frameworks for rapid and reliable inference from gravitational-wave detector data. He is actively engaged in improving waveform models for extreme mass-ratio inspirals detectable by LISA, exploring superradiant instabilities, and understanding spacetime turbulence.

Key Scientific Contributions:

Across more than two dozen peer-reviewed publications since 2011, Green has advanced our understanding of quasinormal-mode orthogonality in Kerr spacetime, pioneered neural-importance-sampling techniques that accelerate Bayesian parameter estimation for LIGO-Virgo detections, and developed new formalisms for nonlinear metric perturbations sourced by point particles. His 2022 works on conserved currents and neural inference have already garnered significant attention within the gravitational-wave and machine-learning communities.

Awards & Funding:

• UKRI Future Leaders Fellowship (2022 – present) – includes £25,000 per annum research funding.

Current & Past Positions:

• Nottingham Research Fellowship (Nov 2022 – present) – University of Nottingham, School of Mathematical Sciences, UK
• Senior Scientist (Jul 2021 – Oct 2022) – Max Planck Institute for Gravitational Physics, Potsdam, Germany
• Postdoc / Junior Scientist (Sep 2017 – Jul 2021) – Max Planck Institute for Gravitational Physics, Potsdam, Germany
• Postdoctoral Fellow (Sep 2014 – Aug 2017) – Perimeter Institute for Theoretical Physics, Waterloo, Canada
• CITA National Postdoctoral Fellow (Sep 2012 – Aug 2014) – University of Guelph, Canada

Labs, Teams & Collaborations:

Green is a member of the LIGO Scientific Collaboration and has collaborated extensively with researchers at the Albert Einstein Institute, Perimeter Institute, and various international partners. While the text does not specify a named lab, his work is closely tied to the gravitational-wave and theoretical-physics groups within the School of Mathematical Sciences at the University of Nottingham.