Nonlinear effects in basic problems of quantum electrodynamics

• Grant number: 14/08970-1
• Support type: Research Grants - Visiting Researcher Grant - International
• Duration: September 01, 2014 - August 31, 2015
• Field of knowledge: Physical Sciences and Mathematics - Physics - Elementary Particle Physics and Fields
• Principal Investigator: Dmitri Maximovitch Guitman
• Grantee: Dmitri Maximovitch Guitman
• Visiting researcher: Anatoly Elfimovitch Shabad
• Visiting researcher institution: Russian Academy of Sciences (RAS), Russia
• Home Institution: Instituto de Física (IF). Universidade de São Paulo (USP). São Paulo , SP, Brazil
• Associated research grant: 12/00333-7 - Problems in quantum mechanics and quantum field theory with strong backgrounds and in noncommutative spacetimes, AP.TEM

Abstract

Interactions of strong electromagnetic fields in the vacuum between themselves and with quantum fields will be investigated in the framework of Quantum Electrodynamics and other nonlinear field theories and applied to strong fields in the close vicinity of elementary particles (due to their charges, magnetic and electric moments), as well as to the fields of magnetars and quark stars. The approach will be based on calculations of the second- and higher-rank polarization tensors and a study of the corresponding nonlinear Maxwell equations within and beyond the local approximation of the effective action functional and its development in powers of the field invariants following the methods elaborated in the previous works of the group. (AU)

Scientific publications

(7)

(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.; SHABAD, A. E.; SHISHMAREV, A. A. Particle-like representation for the field of a moving point charge in nonlinear electrodynamics. PHYSICA SCRIPTA, v. 92, n. 5 MAY 2017. Web of Science Citations: 4.

SHABAD, A. E. VELOCITY ADDITION AND A CLOSED TIME CYCLE IN LORENTZ-NONINVARIANT THEORIES. THEORETICAL AND MATHEMATICAL PHYSICS, v. 187, n. 3, p. 813-822, JUN 2016. Web of Science Citations: 1.

GITMAN, D. M.; SHABAD, A. E.; SHISHMAREV, A. A. A note on ``Measuring propagation speed of Coulomb fields{''} by R. de Sangro, G. Finocchiaro, P. Patteri, M. Piccolo, G. Pizzella. EUROPEAN PHYSICAL JOURNAL C, v. 76, n. 5, p. 1-2, MAY 10 2016. Web of Science Citations: 0.

ADORNO, T. C.; GITMAN, D. M.; SHABAD, A. E. When electric charge becomes also magnetic. Physical Review D, v. 92, n. 4 AUG 31 2015. Web of Science Citations: 4.

COSTA, CAIO V.; GITMAN, DMITRY M.; SHABAD, ANATOLY E. Finite field-energy of a point charge in QED. PHYSICA SCRIPTA, v. 90, n. 7, SI JUL 2015. Web of Science Citations: 18.

FRESNEDA, R.; GITMAN, D. M.; SHABAD, A. E. Photon propagation in noncommutative QED with constant external field. Physical Review D, v. 91, n. 8 APR 3 2015. Web of Science Citations: 5.

SHABAD, A. E. SINGULAR CENTER AS A NONGRAVITATIONAL BLACK HOLE. THEORETICAL AND MATHEMATICAL PHYSICS, v. 181, n. 3, p. 1643-1651, DEC 2014. Web of Science Citations: 0.