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Off-shell actions for massless higher-spin $\mathcal{N}=1$ supermultiplets in five dimensions (5D) are constructed in harmonic superspace in terms of unconstrained prepotentials. Cubic couplings of these supermultiplets to the…

High Energy Physics - Theory · Physics 2025-10-21 Evgeny I. Buchbinder , Sergei M. Kuzenko , Igor B. Samsonov

Superconformal matter multiplets play a crucial role in the construction of Poincare supergravity invariants. Off-shell multiplets allow for construction of general matter couplings in supergravity. In Nucl. Phys. B214 (1983) 519-531,…

High Energy Physics - Theory · Physics 2020-03-25 Subramanya Hegde , Bindusar Sahoo , Aravindhan Srinivasan

This thesis presents the general structure of non-conformal higher-spin supercurrent multiplets in three and four spacetime dimensions. Such supercurrents are in one-to-one correspondence with off-shell massless higher-spin gauge…

High Energy Physics - Theory · Physics 2020-09-03 Jessica Hutomo

We define a new dilaton Weyl multiplet of ${\mathcal{N}}=2$ conformal supergravity in four dimensions. This is constructed by reinterpreting the equations of motion of an on-shell hypermultiplet as constraints that render some of the fields…

High Energy Physics - Theory · Physics 2024-09-24 Gregory Gold , Saurish Khandelwal , William Kitchin , Gabriele Tartaglino-Mazzucchelli

A multiplet calculus is presented for an arbitrary number n of N=2 tensor supermultiplets. For rigid supersymmetry the known couplings are reproduced. In the superconformal case the target spaces parametrized by the scalar fields are cones…

High Energy Physics - Theory · Physics 2009-11-11 Bernard de Wit , Frank Saueressig

We survey on-shell and off-shell higher derivative supergravities in dimensions $1\le D\le 11$. Various approaches to their construction, including the Noether procedure, (harmonic) superspace, superform method, superconformal tensor…

High Energy Physics - Theory · Physics 2024-08-06 Mehmet Ozkan , Yi Pang , Ergin Sezgin

We describe several families of primary linear supermultiplets coupled to three-dimensional ${\cal N}=2$ conformal supergravity and use them to construct topological $BF$-type terms. We introduce conformal higher-spin gauge superfields and…

High Energy Physics - Theory · Physics 2018-12-19 Jessica Hutomo , Sergei M. Kuzenko , Daniel Ogburn

Basics of ${\cal N}=2, 4D$ conformal and Einstein supergravities in the harmonic superspace approach are outlined. The crucial merit of this formulation consists in that the relevant off-shell supermultiplets, in particular ${\cal N}=2, 4D$…

High Energy Physics - Theory · Physics 2022-12-16 Evgeny Ivanov

We construct supersymmetric completions of various curvature squared terms in five dimensional supergravity with eight supercharges. Adopting the dilaton Weyl multiplet, we obtain the minimal off-shell supersymmetric Ricci scalar squared as…

High Energy Physics - Theory · Physics 2013-08-15 Mehmet Ozkan , Yi Pang

In these lectures we discuss N-extended conformal supergravity and its spectrum in four dimensions. These theories can be considered as the massless limit of Einstein-Weyl supergravity and by taking into account their enhanced gauge…

High Energy Physics - Theory · Physics 2020-01-16 Sergio Ferrara , Alex Kehagias , Dieter Lust

Lagrangians for several new off-shell 4D, N = 1 supersymmetric descriptions of massive superspin-1 and superspin-3/2 multiplets are described. Taken together with the models previously constructed, there are now four off-shell formulations…

High Energy Physics - Theory · Physics 2012-08-27 I. L. Buchbinder , S. James Gates, , S. M. Kuzenko , J. Phillips

We construct a new off-shell invariant in N=2, D=5 supergravity whose leading term is the square of the Riemann tensor. It contains a gravitational Chern-Simons term involving the vector field that belongs to the supergravity multiplet. The…

High Energy Physics - Theory · Physics 2015-05-28 Eric A. Bergshoeff , Jan Rosseel , Ergin Sezgin

This paper presents a projective superspace formulation for 4D N = 2 matter-coupled supergravity. We first describe a variant superspace realization for the N = 2 Weyl multiplet. It differs from that proposed by Howe in 1982 by the choice…

High Energy Physics - Theory · Physics 2009-01-27 S. M. Kuzenko , U. Lindstrom , M. Rocek , G. Tartaglino-Mazzucchelli

We present the N=4 superspace constraints for the two-dimensional (2d) off-shell (4,4) supergravity with the superfield strengths expressed in terms of a (4,4) twisted (scalar) multiplet TM-I, as well as the corresponding component results,…

High Energy Physics - Theory · Physics 2009-10-30 Sergei V. Ketov , Christine Unkmeir , Sven-Olaf Moch

We revisit the construction of N=2 superconformal multiplets using rheonomic superspace techniques. We apply the result to the derivation of off-shell Poincar\'e supersymmetric models where a tensor multiplet couples to gravity and to an…

High Energy Physics - Theory · Physics 2018-09-26 Niccolò Cribiori , Gianguido Dall'Agata

We develop off-shell formulations for ${\cal N}=1$ and ${\cal N}=2$ anti-de Sitter supergravity theories in three spacetime dimensions that contain gauge two-forms in the auxiliary field sector. These formulations are shown to allow…

High Energy Physics - Theory · Physics 2018-01-03 Evgeny I. Buchbinder , Jessica Hutomo , Sergei M. Kuzenko , Gabriele Tartaglino-Mazzucchelli

We develop a manifestly conformal approach to describe linearised (super)conformal higher-spin gauge theories in arbitrary conformally flat backgrounds in three and four spacetime dimensions. Closed-form expressions in terms of gauge…

High Energy Physics - Theory · Physics 2019-06-26 Sergei M. Kuzenko , Michael Ponds

We propose a new off-shell formulation for N-extended conformal supergravity in three spacetime dimensions. Our construction is based on the gauging of the N-extended superconformal algebra in superspace. Covariant constraints are imposed…

High Energy Physics - Theory · Physics 2013-09-18 Daniel Butter , Sergei M. Kuzenko , Joseph Novak , Gabriele Tartaglino-Mazzucchelli

We construct the dilaton Weyl multiplet for $N=2$ conformal supergravity in four dimensions. Beginning from an on-shell vector multiplet coupled to the standard Weyl multiplet, the equations of motion can be used to eliminate the…

High Energy Physics - Theory · Physics 2018-04-18 Daniel Butter , Subramanya Hegde , Ivano Lodato , Bindusar Sahoo

The superspace formulation for four-dimensional N = 2 matter-coupled supergravity recently developed in arXiv:0805.4683 makes use of a new type of conformal compensator with infinitely many off-shell degrees of freedom: the so-called…

High Energy Physics - Theory · Physics 2009-01-14 Sergei M. Kuzenko