Two dimensional gravity and brst cohomology.

• Grant number: 99/07175-1
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• Start date: October 01, 1999
• End date: September 30, 2002
• Field of knowledge: Physical Sciences and Mathematics - Physics - Elementary Particle Physics and Fields
• Principal Investigator: Maria Cristina Batoni Abdalla Ribeiro
• Grantee: Ion Vasile Vancea
• Host Institution: Instituto de Física Teórica (IFT). Universidade Estadual Paulista (UNESP). Campus de São Paulo. São Paulo , SP, Brazil

Abstract

We intend to study the BRST cohomology of 2D gravity and dilaton gravity and determine the covariant action, the anomalies and the Schwinger terms from the first three cohomology groups. We want to investigate the 2D black-holes and compute the trace anomaly for non-minimaly coupled scalars in spherically reduced gravity. We intend to extend the present knowledge of 2D gravity by computing the BRST cohomology of 2D supergravity. (AU)