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過去の記録 ～09/11｜次回の予定｜今後の予定 09/12～
| 開催情報 | 水曜日 16:30～18:00 数理科学研究科棟(駒場) 122号室 |
|---|---|
| 担当者 | 河東 泰之 |
| セミナーURL | https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm |
2009年07月16日(木)
16:30-18:00 数理科学研究科棟(駒場) 056号室
Ingo Runkel 氏 (King's College London)
Algebraic structures in conformal field theory
Ingo Runkel 氏 (King's College London)
Algebraic structures in conformal field theory
[ 講演概要 ]
It turned out to be fruitful to isolate questions in CFT which can be formulated in a purely categorical fashion. The way left and right moving degrees of freedom can be combined to a consistent theory is an example of this, the relevant structure being a commutative symmetric Frobenius algebra. This is true independently of whether CFT is formulated via sewing of surfaces or nets of operator algebras. Another example is modular invariance, which has a surprising alternative formulation as a certain maximality condition.
It turned out to be fruitful to isolate questions in CFT which can be formulated in a purely categorical fashion. The way left and right moving degrees of freedom can be combined to a consistent theory is an example of this, the relevant structure being a commutative symmetric Frobenius algebra. This is true independently of whether CFT is formulated via sewing of surfaces or nets of operator algebras. Another example is modular invariance, which has a surprising alternative formulation as a certain maximality condition.
