Magnetic response from constant backgrounds to Coulomb sources T. C. Adorno, D. M. Gitman, A. E. Shabad
Material type:
ArticleContent type: Текст Media type: электронный Subject(s): магнитный отклик | магнитное поле | нелинейная электродинамика | электрический зарядGenre/Form: статьи в журналах Online resources: Click here to access online
In:
The European physical journal Vol. 80, № 4. P. 308 (1-11)Abstract: Within general nonlinear electrodynamics given
by a local action, very special magnetic field configuration
carrying no magnetic charge is found as a linear response
of the vacuum, filled with constant electric and magnetic
fields, to an embedded static electric charge. When the electric
charge is point-like and external fields are parallel, the
response found may be interpreted as a field of two point-like
magnetic charges of opposite polarities in one point. Coefficients
characterizing the magnetic response and induced
current are specialized to quantum electrodynamics (QED),
where the nonlinearity is taken as that determined by the
local Heisenberg–Euler effective action. It is demonstrated
how the same response is reproduced in the (nonisotropic)
region remote from the charge by considering the polarization
operator of QED.
Библиогр.: 47 назв.
Within general nonlinear electrodynamics given
by a local action, very special magnetic field configuration
carrying no magnetic charge is found as a linear response
of the vacuum, filled with constant electric and magnetic
fields, to an embedded static electric charge. When the electric
charge is point-like and external fields are parallel, the
response found may be interpreted as a field of two point-like
magnetic charges of opposite polarities in one point. Coefficients
characterizing the magnetic response and induced
current are specialized to quantum electrodynamics (QED),
where the nonlinearity is taken as that determined by the
local Heisenberg–Euler effective action. It is demonstrated
how the same response is reproduced in the (nonisotropic)
region remote from the charge by considering the polarization
operator of QED.
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