Monday, October 8, 2012

1210.1591 (Ralph Blumenhagen et al.)

A bi-invariant Einstein-Hilbert action for the non-geometric string    [PDF]

Ralph Blumenhagen, Andreas Deser, Erik Plauschinn, Felix Rennecke
Inspired by recent studies on string theory with non-geometric fluxes, we develop a differential geometry calculus combining usual diffeomorphisms with what we call beta-diffeomorphisms. This allows us to construct a manifestly bi-invariant Einstein-Hilbert type action for the graviton, the dilaton and a dynamical (quasi-)symplectic structure. The equations of motion of this symplectic gravity theory, further generalizations and the relation to the usual form of the string effective action are discussed. The Seiberg-Witten limit, known for open strings to relate commutative with non-commutative theories, makes an interesting appearance.
View original: http://arxiv.org/abs/1210.1591

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