Journal
JOURNAL OF HIGH ENERGY PHYSICS
Volume -, Issue 4, Pages -Publisher
SPRINGER
DOI: 10.1088/1126-6708/2009/04/075
Keywords
Flux compactifications; String Duality
Categories
Funding
- RTN [MRTN-CT-2004-005104, MRTN-CT-2004-512194]
- ANR [BLAN06-3-137168, BLAN05-0079-01]
- EPSRC [EP/D047463/1] Funding Source: UKRI
- STFC [ST/G000743/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/D047463/1] Funding Source: researchfish
- Science and Technology Facilities Council [ST/G000743/1] Funding Source: researchfish
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We discuss the action of O(d, d), and in particular T-duality, in the context of generalized geometry, focusing on the description of so-called non-geometric backgrounds. We derive local expressions for the pure spinors descibing the generalized geometry dual to an SU(3) structure background, and show that the equations for N = 1 vacua are invariant under T-duality. We also propose a local generalized geometrical definition of the charges f, H, Q and R appearing in effective four-dimensional theories, using the Courant bracket. We then address certain global aspects, in particular whether the local non-geometric charges can be gauged away in, for instance, backgrounds admitting a torus action, as well as the structure of generalized parallelizable backgrounds.
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