Problems of lagragian and Hamiltonian BRST quantization of Gauge theories

• Grant number: 02/00423-4
• Support Opportunities: Scholarships in Brazil - Post-Doctorate
• Effective date (Start): May 01, 2002
• Effective date (End): April 30, 2006
• Field of knowledge: Physical Sciences and Mathematics - Physics - Elementary Particle Physics and Fields
• Principal Investigator: Dmitri Maximovitch Guitman
• Grantee: Pavel Moshin
• Host Institution: Instituto de Física (IF). Universidade de São Paulo (USP). São Paulo , SP, Brazil
• Associated research grant: 02/00222-9 - Some actual problems of Quantum Field Theory, AP.TEM

Abstract

Gauge field theory provides a universal setting for the description of the fundamental interactions. The concept of BRST symmetry allows to combine the study of classical and quantum properties of a gauge theory. Lagrangian and Hamiltonian formalisms provide two independent approaches to the BRST quantization of a gauge theory. Different realizations of BRST symmetry lead to new quantization schemes. This research project is aimed at the study of some general and applied aspects of gauge field theory in the framework of BRST symmetry: solution of master equations; problems of superfield quantization; investigation of physical unitarity, Ward identities and gauge dependence; correspondence between Lagrangian and Hamiltonian gauge algebras; quantization of models with reparametrization invariance and models of two-dimensional gravity. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

GITMAN‚ D.M.; MOSHIN‚ P.Y.. Modifications of< i> Sp(2) covariant superfield quantization. Physics Letters B, v. 576, n. 1, p. 227-236, 2003. (02/00423-4)