Whittaker modules for the twisted affine Nappi-Witten Lie algebra ${\hat{H}}_4[\tau ]$

Xue Chen, Cuipo Jiang

The Whittaker module $M_{\psi }$ and its quotient Whittaker module $L_{\psi ,\xi }$ for the twisted affine Nappi-Witten Lie algebra ${\hat{H}}_4[\tau ]$ are studied. For nonsingular type, it i…