Magnetic response to applied electrostatic field in external magnetic field

Autor(es)

Adorno, T. C. ^{[1, 2]} ; Gitman, D. M. ^{[3, 1]} ; Shabad, A. E. ^[4]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Inst Fis, BR-05508090 Sao Paulo - Brazil

^[2] Univ Florida, Dept Phys, Gainesville, FL 32611 - USA

^[3] Tomsk State Univ, Dept Phys, Tomsk 634050 - Russia

^[4] PN Lebedev Phys Inst, Moscow 117924 - Russia

• Tipo de documento: Artigo Científico
• Fonte: EUROPEAN PHYSICAL JOURNAL C; v. 74, n. 4 APR 23 2014.
• Citações Web of Science: 6

Resumo

We show, within QED and other possible nonlinear theories, that a static charge localized in a finite domain of space becomes a magnetic dipole, if it is placed in an external (constant and homogeneous) magnetic field in the vacuum. The magnetic moment is quadratic in the charge, depends on its size and is parallel to the external field, provided the charge distribution is at least cylindrically symmetric. This magneto-electric effect is a nonlinear response of the magnetized vacuum to an applied electrostatic field. Referring to the simple example of a spherically symmetric applied field, the nonlinearly induced current and its magnetic field are found explicitly throughout the space; the pattern of the lines of force is depicted, both inside and outside the charge, which resembles that of a standard solenoid of classical magnetostatics. (AU)

• Processo FAPESP: 13/16592-4 - Problemas em teoria quântica de campos com campos externos fortes e quantização canônica aprimorada de sistemas clássicos
• Beneficiário: Tiago Carlos Adorno de Freitas
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Pós-Doutorado
• Processo FAPESP: 11/51867-9 - Anatoly Efimovich Shabad | PN Lebedev Physical Institute - Rússia
• Beneficiário: Dmitri Maximovitch Guitman
• Modalidade de apoio: Auxílio à Pesquisa - Pesquisador Visitante - Internacional
• Processo FAPESP: 13/00840-9 - Problemas em Mecânica Quântica e Teoria Quântica de Campos com Campos Fortes e em Espaços Não Comutativos
• Beneficiário: Tiago Carlos Adorno de Freitas
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado