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Some actual problems of Quantum Field Theory

Grant number: 02/00222-9
Support type:Research Projects - Thematic Grants
Duration: November 01, 2002 - April 30, 2008
Field of knowledge:Physical Sciences and Mathematics - Physics
Principal Investigator:Dmitri Maximovitch Guitman
Grantee:Dmitri Maximovitch Guitman
Home Institution: Instituto de Física (IF). Universidade de São Paulo (USP). São Paulo , SP, Brazil
Co-Principal Investigators:Bruto Max Pimentel Escobar ; Gil da Costa Marques ; Jeferson de Lima Tomazelli
Associated grant(s):07/59178-2 - Igor Viktorovich Tyutin | Lebedev Physical Institute - Rússia, AV.EXT
06/55530-0 - Serguei Gavrilov | Herzen State Pedagogical University of Russia - Russia, AV.EXT
05/54488-8 - Boris Voronov | Lebedev Physical Institute - Rússia, AV.EXT
03/08758-8 - Vladislav Gavrilovich Bagrov | Tomsk State University - Russia, AV.EXT
Associated scholarship(s):02/00423-4 - Problems of lagragian and Hamiltonian BRST quantization of Gauge theories, BP.PD

Abstract

Quantum field theory (QFT) still is the most grounded and elaborated microscopic theory of elementary particles and their interactions. The attention to string theory and hopes related to such a theory as an unified theory of all the interactions, including gravity, do not mean that QFT is completely exhausted at present, that all the principal problem of QFT are already solved, and no reserves for futures development left. To the contrary, now the string theory and QFT coexist and complement each other very fruitfully. Methods and ideas of QFT are widely used in both in string theory and in condense matter physics. In that respect, studying proper and relevant problems in QFT we mar at the same time contribute significantly to the progress of the above mentioned theories. In the present project we plane to study problems of QFT in three following directions: 1) QFT in external backgrounds; 2)quantization problems and general theory of constrained (especially gauge) systems; 3) description of higher spins in relativistic quantum theory. (AU)

Scientific publications (4)
(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)
BERTIN‚ MC; PIMENTEL‚ BM; POMPEIA‚ PJ. FIRST-ORDER ACTIONS: A NEW VIEW. MODERN PHYSICS LETTERS A, v. 20, n. 37, p. 2873-2889, 2005.
CASANA‚ R.; FLORES-HIDALGO‚ G.; PIMENTEL‚ BM. Sum rules in the oscillator radiation processes. Physics Letters A, v. 337, n. 1, p. 1-9, 2005.
CASANA‚ R.; PIMENTEL‚ BM. Comments on regularization ambiguities and local gauge symmetries. MODERN PHYSICS LETTERS A, v. 20, n. 25, p. 1933-1938, 2005.
CASANA‚ R.; FAINBERG‚ V.Y.; PIMENTEL‚ BM; VALVERDE‚ JS. Bose-Einstein condensation and free DKP field. Physics Letters A, v. 316, n. 1, p. 33-43, 2003.

Please report errors in scientific publications list by writing to: cdi@fapesp.br.