111 citations · 153 across the 10 of their papers we have counts for
10 papers
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…
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…
On small tension p-branes
Jonas Bjornsson, Stephen Hwang
This paper deals with p-branes with small but non-zero tension. We prove the existence of canonical transformations, within a perturbation theory, that link specific geometries of…
On the unitarity of gauged non-compact WZNW strings
Jonas Bjornsson, Stephen Hwang
In this paper we investigate the unitarity of gauged non-compact WZNW strings i.e. string theories formulated as G/H' WZNW models, where G is a non-compact group. These models repr…
The BRST treatment of stretched membranes
Jonas Bjornsson, Stephen Hwang
The BRST-invariant formulation of the bosonic stretched membrane is considered. In this formulation the stretched membrane is given as a perturbation around zero-tension membranes,…
Stretched quantum membranes
Jonas Bjornsson, Stephen Hwang
We study bosonic and space-time supersymmetric membranes with small tensions corresponding to stretched configurations. Using a generalized lightcone gauge, one may set up a pertur…