3 papers
hep-th1997
BRST-co-BRST Quantization of Reparametrization Invariant Theories
Geza Fulop
We study some reparametrization invariant theories in context of the BRST-co-BRST quantization method. The method imposes restrictions on the possible gauge fixing conditions and l…
gr-qc1993
About a Super-Ashtekar-Renteln Ansatz
Géza Fülöp
The Ashtekar-Renteln Ansatz gives the self-dual solutions to the Einstein equation. A direct generalization of the Ashtekar-Renteln An\-satz to N=1 supergravity is given both in th…
gr-qc1992
Transformations and BRST-Charges in 2+1 Dimensional Gravitation
Géza Fülöp
Canonical transformations relating the variables of the ADM-, Ashtekar's and Witten's formulations of gravity are computed in 2+1~dimensions. Three different forms of the BRST-char…