Adler’s zero and effective Lagrangians for nonlinearly realized symmetry
Adler’s zero and effective Lagrangians for nonlinearly realized symmetry
Long ago Coleman, Callan, Wess and Zumino (CCWZ) constructed the general effective lagrangian for nonlinearly realized symmetry by finding all possible nonlinear representations of the broken group G which become linear when restricted to the unbroken group H. However, in the case of a single Nambu-Goldstone boson (NGB), which corresponds …