Some problems in the quantum field theory of strong fields

• Grant number: 09/05420-2
• Support Opportunities: Research Grants - Visiting Researcher Grant - International
• Start date: September 21, 2009
• End date: September 20, 2010
• Field of knowledge: Physical Sciences and Mathematics - Physics - Elementary Particle Physics and Fields
• Principal Investigator: Dmitri Maximovitch Guitman
• Grantee: Dmitri Maximovitch Guitman
• Visiting researcher: Serguei Gavrilov
• Visiting researcher institution: Herzen University, Russia
• Host Institution: Instituto de Física (IF). Universidade de São Paulo (USP). São Paulo , SP, Brazil

Abstract

A new development in the Green function methods and one-loop effective description applicable to QFT with strong fields and unstable vacuum will be presented, and also its application to many problems involving strong eletromagnetic and Yang-Mills background fields at finite temperature. These methods, useful in QFT with uniform fields, will be generalized in the presence of a Aharonov-Bohm potential.We will also generalize our method of the canonical quantization of gauge models of the relativistic particle to a covariant approach.Professor Gavrilov will continue to fulfill the role of co-supervisor of phd students of DFN/IF and will lecture on QFT with strong fields for undergraduate and graduate students. (AU)