2 papers
gr-qc1998
't Hooft's Polygon Approach Hyperbolically Revisited
Helia R. Hollmann, Ruth M. Williams
The initial data in the polygon approach to (2+1)D gravity coupled to point particles are constrained by the vertex equations and the particle equations. We establish the hyperboli…
gr-qc1996
A Harmonic Space Approach to Spherically Symmetric Quantum Gravity
Helia Hollmann
After dimensional reduction the stationary spherically symmetric sector of Einstein's gravity is identified with an SL(2,R)/SO(2) Sigma model coupled to a one dimensional gravitati…