Nagoya University: Kobayashi-Maskawa Institute for the Origin of Particles and the Universe (KMI)

Nagoya University


KMI Theory Seminar
"New results and outstanding challenges from UV unitarity."
Yu-Tin Huang
(National Taiwan University)
May 16, 2017 (Tue) 16:30-
KMI Science Symposia (ES635)

In this talk I will survey how various physical conjectures, such as the a-theorem, scale vs conformal symmetry, the weak gravity conjecture, can be encoded in properties of the S-matrix for certain effective field theories. Their proof, in this context, is then tied to general features of unitary UV completions and its constraint on the low energy S-matrix. I review cases where such an approach is successful, the remaining challenges, and some unexpected consequences.