Goldstino superfields for spontaneously broken \( \mathcal{N} = 2 \) supersymmetry
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Publication:466587
DOI10.1007/JHEP06(2011)133zbMATH Open1298.81482arXiv1105.3001OpenAlexW1497471790MaRDI QIDQ466587
Author name not available (Why is that?)
Publication date: 27 October 2014
Published in: (Search for Journal in Brave)
Abstract: We examine spontaneously broken N=2 supersymmetry in four dimensions and associate a spinor superfield with each Goldstino via a finite supersymmetry transformation with parameters that are the Grassmann coordinates of N=2 superspace. Making use of a special choice of coset parametrization allows us to develop a version of nonlinearly realized N=2 supersymmetry for which the associated Goldstino superfields are defined on harmonic superspace, thereby providing a natural mechanism for construction of a Goldstino action. The corresponding superfield Lagrangian is an O(4) multiplet. This property is used to reformulate the Goldstino action in projective superspace and in conventional N=2 superspace. We show how to generate matter couplings of the Goldstinos to supersymmetric matter using the N=2 harmonic, projective and full superspaces. As a bi-product of our consideration, we also derive an N=2 chiral Goldstino action.
Full work available at URL: https://arxiv.org/abs/1105.3001
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