Nambu-Goldstone Bosons: from Composite Higgs to Scattering Amplitudes

by Ian Low (Argonne)

Thursday 3 May 2018, 14:00 → 15:00 Europe/Berlin

3344 (Physikdepartment)

I will discuss recent progresses in understanding the infrared structure of nonlinear sigma models. They result in universal imprints in Higgs couplings for composite Higgs models where the Higgs arises as a pseudo-Nambu-Goldstone boson. For scattering amplitudes of Goldstone bosons, we derive the subleading single soft theorem and shed light on the mysterious extended theory of biadjoint cubic scalars recently uncovered using the Cachazo-He-Yuan representation of scattering equations.