November 27, 2015 13：00 – 14：00
・Dr. Yuho Sakatani（Seoul National University / Institute for Basic Sciences）
Finite Transformations in Doubled and Exceptional Space
Double field theory (DFT) is an approach for massless modes of string theory, unifying and geometrizing all gauge invariance in a manifestly T-duality covariant manner. In DFT, in order to make the T-duality covariance manifest, the dimensions of space are doubled. However, by the consistency of the theory, coordinate dependence of the physical fields is strongly constrained and this makes the finite coordinate transformation law highly complicated. In this talk, after introducing DFT and reviewing previous studies on finite transformations in DFT, I will explain our recent proposal for finite transformations in DFT. Application of our approach to the SL(5) exceptional field theory is also discussed.