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Ward Identity and Scattering Amplitudes in Nonlinear Sigma Models
We present a Ward identity for nonlinear sigma models using generalized nonlinear shift symmetries, without introducing current algebra or coset space. The Ward identity constrains correlation functions of the sigma model such that the Adler’s zero is guaranteed for S-matrix elements, and gives rise...
| Autores principales: | , |
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| Lenguaje: | eng |
| Publicado: |
2017
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1103/PhysRevLett.120.061601 http://cds.cern.ch/record/2290005 |