Davide Silvano Achille Gaiotto (born 11 March 1977) is an Italian mathematical physicist who deals with quantum field theories and string theory. He received the Gribov Medal in 2011 and the New Horizons in Physics Prize in 2013.
He introduced new techniques in the study and design of four-dimensional (N = 2) supersymmetric conformal field theories. He constructed from M5-branes, which are wound around with punctures. This led to new insights into the dynamics of four-dimensional (supersymmetric) gauge theories. With Juan Maldacena he studied these gauge theories using the AdS/CFT correspondence. In 2008, he as well as Gregory Moore and Andrew Neitzke gave an alternative construction of the Ooguri–Vafa metric, which was first constructed with the Gibbons–Hawking ansatz. In 2010, together with Yuji Tachikawa and Luis Alday, he developed the AGT correspondence (named after the authors), a duality in the 6D (2,0) superconformal field theory with compactification on a surface to a conformal field theory on the surface (Liouville field theory).
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