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Discovery Projects - Grant ID: DP160103633

Title
Discovery Projects - Grant ID: DP160103633
Funding
ARC | Discovery Projects
Contract (GA) number
DP160103633
Start Date
2016/01/01
End Date
2020/12/31
Open Access mandate
no
Organizations
-
More information
http://purl.org/au-research/grants/arc/DP160103633

 

  • Taking a vector supermultiplet apart: Alternative Fayet–Iliopoulos-type terms

    Starting from an Abelian ${\cal N}=1$ vector supermultiplet $V$ coupled to conformal supergravity, we construct from it a nilpotent real scalar Goldstino superfield $\mathfrak V$ of the type proposed in arXiv:1702.02423. It contains only two independent component fields, the Goldstino and the auxiliary $D$-field. The important properties of this Goldstino superfield are: (i) it is gauge invariant; and (ii) it is super-Weyl invariant. As a result, the gauge prepotential can be represented as $...

    New nilpotent <math><mi>N</mi><mo>=</mo><mn>2</mn></math> superfields

    Kuzenko, Sergei M.; Tartaglino-Mazzucchelli, Gabriele (2018)
    Projects: ARC | Discovery Projects - Grant ID: DP160103633 (DP160103633)
    We propose new off-shell models for spontaneously broken local N=2 supersymmetry, in which the supergravity multiplet couples to nilpotent Goldstino superfields that contain either a gauge one-form or a gauge two-form in addition to spin-1/2 Goldstone fermions and auxiliary fields. In the case of N=2 Poincaré supersymmetry, we elaborate on the concept of twisted chiral superfields and present a nilpotent N=2 superfield that underlies the cubic nilpotency conditions given in J. High Energy Phy...

    Three-forms in supergravity and flux compactifications

    Farakos, Fotis; Lanza, Stefano; Martucci, Luca; Sorokin, Dmitri (2017)
    Projects: ARC | Discovery Projects - Grant ID: DP160103633 (DP160103633)
    We present a duality procedure that relates conventional four-dimensional matter-coupled N=1 supergravities to dual formulations in which auxiliary fields are replaced by field-strengths of gauge three-forms. The duality promotes specific coupling constants appearing in the superpotential to vacuum expectation values of the field-strengths. We then apply this general duality to type IIA string compactifications on Calabi-Yau orientifolds with RR fluxes. This gives a new supersymmetric formula...

    Three-forms, dualities and membranes in four-dimensional supergravity

    Bandos, Igor; Farakos, Fotis; Lanza, Stefano; Martucci, Luca; Sorokin, Dmitri (2018)
    Projects: ARC | Discovery Projects - Grant ID: DP160103633 (DP160103633)
    We consider four-dimensional $\mathcal{N}=1$ supergravity models of a kind appearing in string flux compactifications. It has been recently shown that, by using double three-form multiplets instead of ordinary chiral multiplets, one can promote to dynamical variables (part of) the quantized numbers appearing in the flux-induced superpotential. We show that double three-form multiplets naturally transform under symplectic dualities associated with the special K\"ahler structure that characteri...

    Fermionic higher-spin triplets in AdS

    Agugliaro, Alessandro; Azzurli, Francesco; Sorokin, Dmitri (2016)
    Projects: ARC | Discovery Projects - Grant ID: DP160103633 (DP160103633)
    We derive a metric-like Lagrangian and equations of motion, in AdS space, for multiplets of fermionic fields with spin ranged from 1/2 to s, from their frame-like formulation.

    Higher Spin Fields in Hyperspace. A Review

    Sorokin, Dmitri; Tsulaia, Mirian (2017)
    Projects: ARC | Discovery Projects - Grant ID: DP160103633 (DP160103633)
    We will give an introduction to the so-called tensorial, matrix or hyperspace approach to the description of massless higher-spin fields.

    The Goldstino Brane, the Constrained Superfields and Matter in N=1 Supergravity

    Bandos, Igor; Heller, Markus; Kuzenko, Sergei M.; Martucci, Luca; Sorokin, Dmitri (2016)
    Projects: ARC | Discovery Projects - Grant ID: DP160103633 (DP160103633)
    We show that different (brane and constrained superfield) descriptions for the Volkov-Akulov goldstino coupled to N = 1 $$ \mathcal{N}=1 $$ , D = 4 supergravity with matter produce similar wide classes of models with spontaneously broken local supersymmetry and discuss the relation between the different formulations. As with the formulations with irreducible constrained superfields, the geometric goldstino brane approach has the advantage of being manifestly off-shell supersymmetric without t...

    New superconformal multiplets and higher derivative invariants in six dimensions

    Kuzenko, Sergei M.; Novak, Joseph; Theisen, Stefan (2017)
    Projects: ARC | Discovery Projects - Grant ID: DP160103633 (DP160103633)
    Within the framework of six-dimensional ${\cal N}=(1,0)$ conformal supergravity, we introduce new off-shell multiplets ${\cal O}{}^{*}(n)$, where $n=3,4,\dots,$ and use them to construct higher-rank extensions of the linear multiplet action. The ${\cal O}{}^{*}(n)$ multiplets may be viewed as being dual to well-known superconformal ${\cal O}(n)$ multiplets. We provide prepotential formulations for the ${\cal O}(n)$ and ${\cal O}{}^{*}(n)$ multiplets coupled to conformal supergravity. For ever...

    Maximally supersymmetric solutions of $R^2$ supergravity

    There are five maximally supersymmetric backgrounds in four-dimensional off-shell N=1 supergravity, two of which are well known: Minkowski superspace M^{4|4} and anti-de Sitter superspace AdS^{4|4}. The three remaining supermanifolds support spacetimes of different topology, which are: R x S^3, AdS_3 x R, and a supersymmetric plane wave isometric to the Nappi-Witten group. As is well known, the Minkowski and anti-de Sitter superspaces are solutions of the Poincar\'e and anti-de Sitter supergr...

    Off-shell massive N=1 supermultiplets in three dimensions

    Kuzenko, Sergei M.; Tsulaia, Mirian (2016)
    Projects: ARC | Discovery Projects - Grant ID: DP160103633 (DP160103633)
    This paper is mainly concerned with the construction of new off-shell higher spin N=1 supermultiplets in three spacetime dimensions. We elaborate on the gauge prepotentials and linearised super-Cotton tensors for higher spin N=1 superconformal geometry and propose compensating superfields required to formulate off-shell massless higher spin supermultiplets. The corresponding gauge-invariant actions are worked out explicitly using an auxiliary oscillator realisation. We construct, for the firs...
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