Seminar
Title: Stringy quantum geometry
Speaker: Fen Zuo (YMSC, Tsinghua U.)
Time: 3:00pm, June 1st, 2017 (Thursday)
Place: Theoretical Physics Division，319
Abstract: Around 2010, Liang Kong proposed an interesting notion of viewing 2d conformal field theories as "stringy algebraic geometry". Here we try to generalize such a notion to a 4d "stringy quantum geometry". That this could be possible is due to two important facts: first, in the mathematical construction of (rational) conformal field theories (FRS framework), the local data and the topological structure are in fact separated; secondly, the bulk-boundary correspondence could been concretely categorificated as the "bulk=center" relation, as shown recently by L. Kong and X-G. Wen. With such a construction we try to answer two questions: what's the topological meaning of the simplicity condition which formally deforms the BF theory to general relativity? how the Bekenstein-Hawking formula for the black hole entropy is achieved?
