Kavli IPMU Komaba Seminar

過去の記録 ~08/06次回の予定今後の予定 08/07~

開催情報 月曜日 16:30~18:00 数理科学研究科棟(駒場) 002号室
担当者 河野 俊丈


17:00-18:30   数理科学研究科棟(駒場) 056号室
Katrin Wendland 氏 (University of Augrburg)
How to lift a construction by Hiroshi Inose to conformal field theory
[ 講演概要 ]
The moduli space of Einstein metrics is well known to algebraic and differential geometers. Physicists have introduced the notion of conformal field theories (CFTs) associated to K3, and the moduli space of these objects is well understood as well. It can be interpreted as a generalisation of the moduli space of Einstein metrics on K3, which allows us to introduce this space without having to use background knowledge from conformal field theory. However, just as no smooth Einstein metrics on K3 are known explicitly, the explicit construction of CFTs associated to K3 in general remains an open problem. The only known constructions which allow to deal with families of CFTs give CFTs associated to K3 surfaces with orbifold singularities.

We use a classical construction by Hiroshi Inose to explicitly construct a family of CFTs which are associated to a family of smooth algebraic K3 surfaces. Although these CFTs were known before, it is remarkable that they allow a description in terms of a family of smooth surfaces whose complex structure is deformed while all other geometric data remain fixed.

We also discuss possible extensions of this result to higher dimensional Calabi-Yau threefolds.