$\mathcal{N}=1$ Geometric Supergravity and chiral triples on Riemann surfaces

Abstract

We construct a global geometric model for the bosonic sector and Killing spinor equations of four-dimensional $\mathcal{N}=1$ supergravity coupled to a chiral non-linear sigma model and a Spin${}_0^c$ structure. The model involves a Lorentzian metric $g$ on a four-manifold $M$, a complex chiral spinor and a map $\phi :M\to \mathcal{M}$ from $M$ to a complex manifold $\mathcal{M}$ endowed with a novel geometric structure which we call chiral triple. Using this geometric model, we show that if $M$ is spin the Kähler-Hodge condition on a complex manifold $\mathcal{M}$ is enough to guarantee the existence of an associated $\mathcal{N}=1$ chiral geometric supergravity, positively answering a conjecture proposed by D. Z. Freedman and A. V. Proeyen. We dimensionally reduce the Killing spinor equations to a Riemann surface $X$, obtaining a novel system of partial differential equations for a harmonic map with potential $\phi :X\to \mathcal{M}$ from $X$ into the Kähler moduli space $\mathcal{M}$ of the theory. We characterize all Riemann surfaces admitting supersymmetric solutions with vanishing superpotential, proving that they consist on holomorphic maps of Riemann surfaces into $\mathcal{M}$ satisfying certain compatibility condition with respect to the canonical bundle of $X$ and the chiral triple of the theory. Furthermore, we classify the biholomorphism type of all Riemann surfaces carrying supersymmetric solutions with complete Riemannian metric and finite-energy scalar map.

41 pages. Minor revision, typos fixed

References in corpus (5)

• Geometry of all supersymmetric four-dimensional $\mathcal{N}=1$ supergravity backgrounds
• Topology of supersymmetric N=1, D=4 supergravity horizons
• Generalized Einstein-Scalar-Maxwell theories and locally geometric U-folds
• Section sigma models coupled to symplectic duality bundles on Lorentzian four-manifolds
• A Geometric Formulation of Supersymmetry

Cited by in corpus (4)

• Special Geometry, Hessian Structures and Applications
• The geometry and DSZ quantization of four-dimensional supergravity
• Super Cartan geometry and the super Ashtekar connection
• Super fiber bundles, connection forms, and parallel transport