Decoupling limits of sgoldstino modes in global and local supersymmetry
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Publication:5963836
DOI10.1016/J.PHYSLETB.2013.06.001zbMATH Open1331.83106arXiv1302.0866OpenAlexW1984602943MaRDI QIDQ5963836
Author name not available (Why is that?)
Publication date: 23 February 2016
Published in: (Search for Journal in Brave)
Abstract: We study the decoupling limit of a superheavy sgoldstino field in spontaneously broken N=1 supergravity. Our approach is based on K"ahler superspace, which, among others, allows direct formulation of N=1 supergravity in the Einstein frame and correct identifications of mass parameters. Allowing for a non-renormalizable K"ahler potential in the hidden sector, the decoupling limit of a superheavy sgoldstino is identified with an infinite negative K"ahler curvature. Constraints that lead to non-linear realizations of supersymmetry emerge as consequence of the equations of motion of the goldstino superfield when considering the decoupling limit. Finally, by employing superspace Bianchi identities, we identify the real chiral superfield, which will be the superconformal symmetry breaking chiral superfield that enters the conservation of the Ferrra-Zumino multiplet in the field theory limit of N=1 supergravity.
Full work available at URL: https://arxiv.org/abs/1302.0866
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