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Reduction of Courant algebroids and generalized complex structures

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arxiv math/0509640 v3 pith:VH4QW6V2 submitted 2005-09-27 math.DG math.SG

classification math.DGmath.SG
keywords generalizedreductioncomplexcourantstructuresahleralgebroidsactions
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abstract

We present a theory of reduction for Courant algebroids as well as Dirac structures, generalized complex, and generalized K\"ahler structures which interpolates between holomorphic reduction of complex manifolds and symplectic reduction. The enhanced symmetry group of a Courant algebroid leads us to define \emph{extended} actions and a generalized notion of moment map. Key examples of generalized K\"ahler reduced spaces include new explicit bi-Hermitian metrics on $\CC P^2$.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Generalised Complex and Spinor Relations

    hep-th 2026-03 unverdicted novelty 7.0 of 10

    Courant algebroid relations define spinor and Dirac structure relations, with T-duality inducing spinor relations that generalize twisted cohomology isomorphisms and are compatible with Type II supergravity equations.

  2. Gauged Courant sigma models

    hep-th 2026-01 unverdicted novelty 6.0 of 10

    Gauged Courant sigma models extend Courant sigma models by adding gauge symmetries from Lie algebroids and Courant algebroids, with consistency ensured by flatness conditions on target-space curvatures and torsions.

  3. Courant Algebroid Relations, T-Dualities and Generalised Ricci Flow

    hep-th 2025-02 conditional novelty 6.0 of 10

    Using Courant algebroid relations, the authors prove that geometric T-duality maps solutions of generalized Ricci flow to solutions of generalized Ricci flow, preserving the generalized string background equations.

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