Research Fellows Directory
Claudia de Rham
Professor Claudia de Rham
Imperial College London
Most of physics is nowadays understood in terms of quantum effective field theories which provide an accurate description of the physical phenomena we are interested in within some given range of energy scale. It is understood that quantum effective field theories are only valid up to a given point where new physics (or new fields) have to be included, corresponding to the Wilsonian approach. At high energy, we usually expect the fundamental theory to be finite and renormalizable. In my research funded by a Royal Society Wolfson Merit Award, I have developed an infinite number of constraints that can be imposed on any low-energy effective field theory if it were admit a standard Wilsonian high energy completion. These bounds can be simply applied on the Scattering Amplitude and can be used in physics to constraint effective field theories as never before. Within the context of Cosmology it will allow segregating between different classes of theories that have been proposed for the description of various stages of the Universe. In particle physics, these constraints can now be used to establish whether there exists any obstruction to a standard completion for different models beyond the standard model of particle physics.
Interests and expertise (Subject groups)