J. Henn: From the hydrogen atom to elementary particle physics

by Johannes Henn (Princeton)

Thursday 12 Dec 2013, 14:00 → 15:00 Europe/Berlin

HS3 (Physikdepartment)

Our understanding of elementary particle physics is based on quantum gauge field theory. Scattering amplitudes computed in these theories link the theoretical description to collider experiments. Over the last years it has become clear that scattering amplitudes are much simpler than anticipated: they have a lot of hidden structure, including unexpected symmetries. In this talk, I will discuss highlights of these findings, drawing analogies to well-known quantum mechanical systems. In the second part of the talk, I will discuss Feynman integrals appearing in loop-level scattering amplitudes from this new perspective. I will present very recent progress exploring the underlying mathematical structure, and apply these new methods to integrals required for studies at the LHC.