N $$ \mathcal{N} $$ = 3 nonlinear multiplet and supergravity

Abstract We propose an N $$ \mathcal{N} $$ = 3 nonlinear multiplet coupled to conformal supergravity and use it to formulate the equations of motion for N $$ \mathcal{N} $$ = 3 Poincaré supergravity. These equations, which are naturally described in a new curved supergeometry with structure group SL...

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Main Authors: Sergei M. Kuzenko, Emmanouil S. N. Raptakis
Format: Article
Language:English
Published: SpringerOpen 2025-07-01
Series:Journal of High Energy Physics
Subjects:
Online Access:https://doi.org/10.1007/JHEP07(2025)262
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author Sergei M. Kuzenko
Emmanouil S. N. Raptakis
author_facet Sergei M. Kuzenko
Emmanouil S. N. Raptakis
author_sort Sergei M. Kuzenko
collection DOAJ
description Abstract We propose an N $$ \mathcal{N} $$ = 3 nonlinear multiplet coupled to conformal supergravity and use it to formulate the equations of motion for N $$ \mathcal{N} $$ = 3 Poincaré supergravity. These equations, which are naturally described in a new curved supergeometry with structure group SL(2, ℂ), imply that the N $$ \mathcal{N} $$ = 3 super-Bach tensor vanishes, and thus every solution of Poincaré supergravity is a solution of conformal supergravity. The aforementioned superspace formulation, which we refer to as N $$ \mathcal{N} $$ = 3 Einstein superspace, is described in terms of two dimension-1/2 superfields: (i) the super-Weyl spinor W α ; and (ii) a spinor isospinor χ α i $$ {\chi}_{\alpha}^i $$ .
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spelling doaj-art-de9fcc36571b496f94d9364c036d61a62025-08-20T04:01:47ZengSpringerOpenJournal of High Energy Physics1029-84792025-07-012025713110.1007/JHEP07(2025)262N $$ \mathcal{N} $$ = 3 nonlinear multiplet and supergravitySergei M. Kuzenko0Emmanouil S. N. Raptakis1Department of Physics M013, The University of Western AustraliaDepartment of Physics M013, The University of Western AustraliaAbstract We propose an N $$ \mathcal{N} $$ = 3 nonlinear multiplet coupled to conformal supergravity and use it to formulate the equations of motion for N $$ \mathcal{N} $$ = 3 Poincaré supergravity. These equations, which are naturally described in a new curved supergeometry with structure group SL(2, ℂ), imply that the N $$ \mathcal{N} $$ = 3 super-Bach tensor vanishes, and thus every solution of Poincaré supergravity is a solution of conformal supergravity. The aforementioned superspace formulation, which we refer to as N $$ \mathcal{N} $$ = 3 Einstein superspace, is described in terms of two dimension-1/2 superfields: (i) the super-Weyl spinor W α ; and (ii) a spinor isospinor χ α i $$ {\chi}_{\alpha}^i $$ .https://doi.org/10.1007/JHEP07(2025)262Extended SupersymmetrySupergravity ModelsSuperspaces
spellingShingle Sergei M. Kuzenko
Emmanouil S. N. Raptakis
N $$ \mathcal{N} $$ = 3 nonlinear multiplet and supergravity
Journal of High Energy Physics
Extended Supersymmetry
Supergravity Models
Superspaces
title N $$ \mathcal{N} $$ = 3 nonlinear multiplet and supergravity
title_full N $$ \mathcal{N} $$ = 3 nonlinear multiplet and supergravity
title_fullStr N $$ \mathcal{N} $$ = 3 nonlinear multiplet and supergravity
title_full_unstemmed N $$ \mathcal{N} $$ = 3 nonlinear multiplet and supergravity
title_short N $$ \mathcal{N} $$ = 3 nonlinear multiplet and supergravity
title_sort n mathcal n 3 nonlinear multiplet and supergravity
topic Extended Supersymmetry
Supergravity Models
Superspaces
url https://doi.org/10.1007/JHEP07(2025)262
work_keys_str_mv AT sergeimkuzenko nmathcaln3nonlinearmultipletandsupergravity
AT emmanouilsnraptakis nmathcaln3nonlinearmultipletandsupergravity