Dilaton chiral perturbation theory and applications

May 3, 2022
3:00pm to 4:00pm

IFT Seminar Room/Red Room

Theoretical Physics, general interest
Maarten Golterman
San Francisco State U. and IFAE

IFT Seminar Room/Red Room


This talk reviews dilaton chiral perturbation theory (dChPT), the effective low-energy theory for the light sector of near-conformal, confining theories. dChPT provides a systematic expansion in both the fermion mass and the distance to the conformal window. It accounts for the pions and the light singlet scalar, the approximate Nambu-Goldstone bosons for chiral and scale symmetry, respectively. A unique feature of dChPT is the existence of a large-mass regime in which the theory exhibits approximate hyperscaling, while the expansion nevertheless remains systematic. We will discuss applications to lattice data, presenting successes as well as directions for future work.