Some actual problems of Quantum Field Theory

• Grant number: 02/00222-9
• Support Opportunities: Research Projects - Thematic Grants
• Start date: November 01, 2002
• End date: April 30, 2008
• Field of knowledge: Physical Sciences and Mathematics - Physics - Elementary Particle Physics and Fields
• Principal Investigator: Dmitri Maximovitch Guitman
• Grantee: Dmitri Maximovitch Guitman
• Host Institution: Instituto de Física (IF). Universidade de São Paulo (USP). São Paulo , SP, Brazil
• Pesquisadores principais: Bruto Max Pimentel Escobar ; Gil da Costa Marques ; Jeferson de Lima Tomazelli
• Associated research 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 - Rússia, 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

(5)

(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)

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. (02/00222-9)

RAMOS-ZAMBRANO, GERMAN E.; PIMENTEL, BRUITO M.; FLOREZ, JUAN B.. MASSLESS SCHWINGER MODEL IN THE NULL PLANE GAUGE. MOMENTO-REVISTA DE FISICA, v. N/A, n. 48, p. 17-pg., 2014-06-01. (02/00222-9)

CASANA‚ R.; PIMENTEL‚ BM. Comments on regularization ambiguities and local gauge symmetries. MODERN PHYSICS LETTERS A, v. 20, n. 25, p. 1933-1938, 2005. (02/00222-9)

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. (02/00222-9, 01/12585-6)

BERTIN‚ MC; PIMENTEL‚ BM; POMPEIA‚ PJ. FIRST-ORDER ACTIONS: A NEW VIEW. MODERN PHYSICS LETTERS A, v. 20, n. 37, p. 2873-2889, 2005. (02/00222-9)