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Theory of Particles, Fields and Strings

Research activities in the UW Particle, Field, and String Theory group include elementary particle phenomenology, applications of quantum field theory, string theory, and cosmology. Current interests include gravitational descriptions of quantum field theories, particularly QCD-like theories, and related aspects of gauge/string duality, signatures of new physics potentially visible in hadronic colliders, novel extensions of the standard model and possible signatures of new physics, dark matter, dark energy, and mass-varying neutrino models, improved techniques for extraction of hadronic physics from lattice gauge theory, properties of high temperature gauge theories, large N limits and other aspects of non-perturbative field theory.


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Stephen Ellis
Emeritus Professor
Particle phenomenology & collider physics
Research Interests: I am primarily interested in precision tests of the Standard Model at particle colliders, especially involving final states with hadronic jets. I am applying these tools to studies at the LHC with the goal of identifying physics Beyond the Standard Model.
Andreas Karch
My current research interests include string theory, mostly in its possible application to QCD and other strongly coupled systems.
Ann E. Nelson
Particle Theory
Particle Physics is governed by a "Standard Model" which is known to be incomplete, as it does not include dark matter, dark energy, neutrino masses, gravity, or an explanation for the cosmological asymmetry between matter and antimatter. My research is on constructing extensions of the Standard Model and working out the implications of extended models for experiments.
Stephen R. Sharpe
Lattice field theory & applications
My research focuses on the non-perturbative regime of quantum field theories, mostly developing and using lattice methods to address issues relevant for constraining the Standard Model of particle physics and searching for physics beyond. Ongoing calculations include those of kaon mixing and decay matrix elements and the use "large-N reduction", whereby in the limit of the large number of colors one can reduce the volume of the theory to a single point.
Laurence Yaffe
Particle Theory
David Kaplan
Professor and INT Enior Fellow
Nuclear and Particle Theory
I work on applications of quantum field theory to various aspects of nuclear and particle physics, including lattice field theory for QCD and supersymmetry, effective field theory for low energy nuclear physics, physics beyond the standard model, and particle cosmology.