3 papers
hep-th1998
The No-ghost Theorem and Strings on AdS_3
J. M. Evans, M. R. Gaberdiel, M. J. Perry
A brief review of string theory on group manifolds is given, and comparisons are then drawn between Minkowski space, SU(2), and SU(1,1) = AdS_3. The proof of the no-ghost theorem i…
hep-th1997
Dynamic D8-branes in IIA string theory
A. Chamblin, M. J. Perry
In this paper we perform a detailed investigation of the Dirichlet eight-brane of the Type IIA string theory, when the effects of gravity are included. In particular, consider what…
gr-qc1992
The Loss of Unitarity in the Vicinity of a Time Machine
Dalia S. Goldwirth, Malcolm J. Perry, Tsvi Piran
We construct the propagator of a non-relativistic non-interacting particle in a flat spacetime in which two regions have been identified. This corresponds to the simplest "time mac…