Speaker
Prof.
Maarten Golterman
(San Francisco State University)
Description
Recent simulations suggest the existence of a very light singlet scalar
in QCD-like theories that may be lying just outside the conformal window.
Assuming that the lightness of this scalar can be explained by an
approximate dilatation symmetry, we develop an effective field theory
framework for both the pions and this light scalar, the "dilatonic meson."
We argue that a power counting exists that puts this effective field
theory on a systematic footing. We contrast the leading-order behavior of
masses with that in a theory with only pions, and comment on the behavior
of the effective theory breaks down near the sill of the conformal window.
Primary author
Prof.
Maarten Golterman
(San Francisco State University)
Co-author
Dr
Yigal Shamir
(Tel Aviv University)
