Effective Field Theory with Nambu-Goldstone Modes
Abstract
These lectures provide an introduction to the low-energy dynamics of Nambu-Goldstone fields, associated with some spontaneous (or dynamical) symmetry breaking, using the powerful methods of effective field theory. The generic symmetry properties of these massless modes are described in detail and two very relevant phenomenological applications are worked out: chiral perturbation theory, the low-energy effective theory of QCD, and the (non-linear) electroweak effective theory. The similarities and differences between these two effective theories are emphasized, and their current status is reviewed. Special attention is given to the short-distance dynamical information encoded in the low-energy couplings of the effective Lagrangians. The successful methods developed in QCD could help us to uncover fingerprints of new physics scales from future measurements of the electroweak effective theory couplings.
Cite
@article{arxiv.1804.05664,
title = {Effective Field Theory with Nambu-Goldstone Modes},
author = {Antonio Pich},
journal= {arXiv preprint arXiv:1804.05664},
year = {2020}
}
Comments
Lectures given at the 2017 Les Houches Summer School on "Effective Field Theory in Particle Physics and Cosmology" (Les Houches, France, 3-28 July 2017). Two references added and some typos corrected