量子Virasoro代数的中心扩张

Central Extension of the Quantum Deformed Virasoro Algebra

本文给出了量子参数q取单位根时的雅可比恒等式,在此基础上求出了q为Beraha值时的量子Virasoro代数中心项的一般表达式。

The quantum deformation of the Jacobi identity was presented and the central extension of the q-deformed Virasoro algebra was found when q is a root of unit. The explicit expressions of the central terms have been obtained with the Beraha q values.