engleski

The double field theory algebroid as a projection of a large Courant algebroid

Double field theory promotes the T-duality of closed string theory to a manifest symmetry, thus leading to a new perspective on the geometry experienced by stringy probes. In this contribution, we discuss the mathematical structure underlying the symmetries of double field theory, thus defining a DFT algebroid. We trace its origins in a large Courant algebroid defined over a doubled geometry, and show that after imposing a section condition the DFT algebroid reduces to a canonical Courant algebroid, as expected in generalized geometry.

Double field theory ; Courant algebroid

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