Rotating string in doubled geometry with generalized isometries

Understand

In this paper, we first construct a globally well-defined non-geometric background which contains several branes in type II string theory compactified on a 7-torus.

• One of these branes is called 5^2_2, which is a codimension-2 object and has a non-trivial monodromy given by a T-duality transformation.
• The geometry near the 5^2_2-brane is shown to approach the non-geometric background constructed in arXiv:1004.2521.
• We then construct the solution of a fundamental string rotating along a non-trivial cycle in the 5^2_2 background.