6 citations · 9 across the 2 of their papers we have counts for
2 papers
hep-th2009★ 3 cited
A no-ghost theorem for the bosonic Nappi-Witten string
Gang Chen, Yeuk-Kwan E. Cheung, Zheyong Fan +2
We prove a no-ghost theorem for a bosonic string propagating in Nappi-Witten spacetime. This is achieved in two steps. We first demonstrate unitarity for a class of NW/U(1) modules…
hep-th2008★ 6 cited
On the unitarity of gauged non-compact world-sheet supersymmetric WZNW models
Jonas Bjornsson, Stephen Hwang
In this paper we generalize our investigation of the unitarity of non-compact WZNW models connected to Hermitian symmetric spaces to the N=1 world-sheet supersymmetric extension of…