Effective Action for Non-Geometric Fluxes from Duality Covariant Actions

Understand

The (heterotic) double field theories and the exceptional field theories are recently developed for manifestly duality covariant formulation of various supergravity theories, describing low-energy limit of various (heterotic) superstring and M-theory compactifications.

• These field theories are known to be reduced to the standard descriptions by introducing appropriately parameterized generalized metric and by applying suitably chosen section conditions.
• We generalize this development to non-geometric backgrounds by utilizing dual fields pertinent to non-geometric fluxes.
• We introduce different parameterizations for the generalized metric, in terms of the conventional supergravity fields or the dual fields.