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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