Speaker
Sungmin Hwang
(Technical University of Munich)
Description
We use non-linear field transformations for non-relativistic fields to implement Poincare invariance in low energy effective theories for QCD. In these transformations we include all terms allowed by the explicit symmetries of the effective theory, but exploit the freedom to remove some of them through field redefinitions. By requiring the invariance of the Lagrangian under these transformations, relations between Wilson coefficients for both theories are derived. The calculations are presented up to the leading order in the expansion parameter. The possibility of applying this method to other types of effective theories as well as its implication will also be discussed.
Primary author
Sungmin Hwang
(Technical University of Munich)
