Nambu-Goldstone Bosons: from Composite Higgs to Scattering Amplitudes
by
Ian Low
(Northwestern U.)
→
Europe/Madrid
IFAE Seminar room (IFAE)
IFAE Seminar room
IFAE
Description
I will discuss recent developments in understanding the infrared structure of nonlinear sigma models. They result in universal predictions in Higgs couplings for all 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.