3 papers
hep-th2000
Vertex Operators in Background with NS_NS Flux using Berkovits-Vafa-Witten Variables
M. Langham
String equations for the vertex operators of type IIB on background with NS-NS flux are calculated using Berkovits-Vafa-Witten formalism. With suitable field defi…
hep-th1999
Symmetric Subgroups of Gauged Supergravities and AdS String Theory Vertex Operators
L. Dolan, M. Langham
We show how the gauge symmetry representations of the massless particle content of gauged supergravities that arise in the AdS/CFT correspondences can be derived from symmetric sub…
hep-th1997
Partition Functions, Duality, and the Tube Metric
L. Dolan, M. Langham
The partition function of type IIA and B strings on R^6xK3, in the T^4/Z_2 orbifold limit, is explicitly computed as a modular invariant sum over spin strutures required by perturb…