Triproducts, nonassociative star products and geometry of R-flux string compactifications

Abstract

We elucidate relations between different approaches to describing the nonassociative deformations of geometry that arise in non-geometric string theory. We demonstrate how to derive configuration space triproducts exactly from nonassociative phase space star products and extend the relationship in various directions. By foliating phase space with leaves of constant momentum we obtain families of Moyal-Weyl type deformations of triproducts, and we generalize them to new triproducts of differential forms and of tensor fields. We prove that nonassociativity disappears on-shell in all instances. We also extend our considerations to the differential geometry of nonassociative phase space, and study the induced deformations of configuration space diffeomorphisms. We further develop general prescriptions for deforming configuration space geometry from the nonassociative geometry of phase space, thus paving the way to a nonassociative theory of gravity in non-geometric flux compactifications of string theory.

33 pages; Contribution to the Proceedings of "Conceptual and Technical Challenges for Quantum Gravity", September 8-12, 2014, Sapienza University of Rome, Italy; to be published in Journal of Physics Conference Series, eds. G. Amelino-Camelia, P. Martinetti and J.-C. Wallet

References in corpus (3)

• T-duality and closed string non-commutative (doubled) geometry
• Finite Gauge Transformations and Geometry in Double Field Theory
• Nonassociative geometry in quasi-Hopf representation categories I: Bimodules and their internal homomorphisms

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• Beyond the Standard Model with noncommutative geometry, strolling towards quantum gravity
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• Towards a world-sheet description of doubled geometry in string theory
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• Matrix Quantization of Classical Nambu Brackets and Super $p$-Branes
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