PIRSA ID: 22120056
Series: Particle Physics Quantum Fields and Strings
Event Type: Seminar
Scientific Area(s): Particle Physics Quantum Fields and Strings
End date: 2022-12-09
Speaker(s): Andreas Helset
One central property of the S-matrix is its invariance under field redefinitions. I will discuss how the geometry of field space makes this invariance manifest. This geometric formulation also has practical consequences. Scattering amplitudes and the renormalization group equations for a theory of scalars and gauge bosons only depend on geometric quantities. Also, the scattering amplitudes satisfy a geometric soft theorem.
Zoom link: https://pitp.zoom.us/j/98973018515?pwd=MFJFSGM4RS9KRHFOREFBc1gvWXYwQT09