Paper
A 12d Origin of the Type IIB String Theory: A Review
Authors
Chang Cheng
Abstract
We review several lines of evidence for a 12d interpretation of the type IIB brane solutions and effective actions. The axio-dilaton sector fits naturally into 12d gravity, as supported by brane geometries and supersymmetry. The special role of the D3 brane in a potential 12d interpretation of type IIB is reviewed, with emphasis on the connection between its SL(2, Z) self-duality and worldvolume electromagnetic duality. Whether the higher-derivative corrections of type IIB admit a 12d interpretation is discussed, and we suggest certain directions for future exploration.