Hirosi Ooguri
Ooguri aims at discovering mathematical structures in these theories and exploiting them to invent new theoretical tools to solve fundamental questions in physics. In particular, he developed the topological string theory to compute Feynman diagrams in superstring theory and used it to study mysterious quantum mechanical properties of black holes. He also made fundamental contributions to conformal field theories in two dimensions, D-branes in Calabi-Yau manifolds, the AdS/CFT correspondence, and properties of supersymmetric gauge theories and their relations to superstring theory. Provided by Wikipedia