skip to content

Department of Applied Mathematics and Theoretical Physics

I work on theoretical problems in high energy, gravitational and condensed matter physics. An accessible overview of my research interests at the interface of these three fields can be found here. High energy and condensed matter physics have long shared fundamental concepts such as symmetry breaking and the renormalization group. More recently, the emerging understanding of spacetime itself as a highly entangled many-body quantum system has enabled a rich new flow of ideas between disciplines.

Condensed matter physics benefits from a wealth of experimental data on so-called 'strange metals' that do not seem to be easily understood using textbook concepts and formulae. High temperature superconductors are a famous example of strange metals that have resisted a comprehensive explanation for decades. Part of my work attempts to get a handle on strange metal regimes in several different ways: by exploring possible microscopic scattering mechanisms, by considering novel collective effects such as hydrodynamic electron flow, and by establishing fundamental bounds on quantum dynamics.

My publications can be found on Inspire, on the arXiv, and on Google Scholar. Videos of some of my talks and lectures can be found on YouTube.

I returned to Cambridge in 2021 to take up the Professorship of Mathematical Physics (1967). I was previously on the faculty in the physics department at Stanford University for 10 years. Before that I did postdocs at the KITP in Santa Barbara and at Harvard University.

I was an undergraduate and graduate student at the University of Cambridge, and then a Junior Research Fellow at Clare College, Cambridge. I rejoined Clare College as a Fellow in 2022.

Research Groups

High Energy Physics
Relativity and Gravitation