Internal supersymmetry and small-field Goldstini
Abstract
The dynamics of the Goldstino mode of spontaneously broken supersymmetry is universal, being fully determined by the non-linearly realized symmetry. We investigate the small-field limit of this theory. This model non-linearly realizes an alternative supersymmetry algebra with vanishing anti-commutators between the fermionic generators, much like an internal supersymmetry. This Goldstino theory is akin to the Galilean scalar field theory that arises as the small-field limit of Dirac-Born-Infeld theory and non-linearly realizes the Galilean symmetry. Indeed, the small-field Goldstino is the partner of a complex Galilean scalar field under conventional supersymmetry. We close with the generalization to extended internal supersymmetry and a discussion of its higher-dimensional origin.
- Publication:
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Journal of High Energy Physics
- Pub Date:
- May 2018
- DOI:
- 10.1007/JHEP05(2018)190
- arXiv:
- arXiv:1710.02480
- Bibcode:
- 2018JHEP...05..190R
- Keywords:
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- Extended Supersymmetry;
- Space-Time Symmetries;
- Superspaces;
- Supersymmetry Breaking;
- High Energy Physics - Theory
- E-Print:
- 12 pages, v2: references added, typos corrected, discussion about a fermionic invariant improved