Finite Transformations in Doubled and Exceptional Space

Understand

In the double field theory, gauge symmetries are realized as generalized diffeomorphisms in the doubled spacetime.

• By consistency of the theory, dependence of tensor fields on the doubled coordinates is strongly constrained.
• This causes finite transformation law highly complicated, both technically and conceptually.
• In this paper, we propose a new, physically intuitive approach to finite gauge transformations by utilizing untwisted form of vector fields.