Nieri Fabrizio
Department of Physics and Astronomy, Uppsala University, Box 516, 75120 Uppsala, Sweden.
Lett Math Phys. 2017;107(11):2147-2187. doi: 10.1007/s11005-017-0986-3. Epub 2017 Sep 4.
We define an elliptic deformation of the Virasoro algebra. We conjecture that the [Formula: see text] Nekrasov partition function reproduces the chiral blocks of this algebra. We support this proposal by showing that at special points in the moduli space the 6d Nekrasov partition function reduces to the partition function of a 4d vortex theory supported on [Formula: see text], which is in turn captured by a free field correlator of vertex operators and screening charges of the elliptic Virasoro algebra.
我们定义了维拉索罗代数的椭圆变形。我们推测,[公式:见原文]涅克拉索夫配分函数再现了该代数的手征块。我们通过证明在模空间的特殊点处,6d涅克拉索夫配分函数简化为支撑在[公式:见原文]上的4d涡旋理论的配分函数来支持这一猜想,而该4d涡旋理论的配分函数又由椭圆维拉索罗代数的顶点算子和屏蔽电荷的自由场关联函数所捕捉。