
SIGMA 3 (2007), 117, 28 pages arXiv:0712.1107
http://dx.doi.org/10.3842/SIGMA.2007.117
Contribution to the Proceedings of the Seventh International Conference Symmetry in Nonlinear Mathematical Physics
SelfLocalized QuasiParticle Excitation in Quantum Electrodynamics and Its Physical Interpretation
Ilya D. Feranchuk and Sergey I. Feranchuk
Department of Physics, Belarusian University, 4 Nezavisimosti Ave., 220030, Minsk, Belarus
Received October 21, 2007, in final form November 29, 2007; Published online December 07, 2007
Abstract
The selflocalized quasiparticle excitation of the
electronpositron field (EPF) is found for the first time in
the framework of a standard form of the quantum electrodynamics.
This state is interpreted as the ''physical'' electron (positron)
and it allows one to solve the following problems: i) to express
the ''primary'' charge e_{0} and the mass m_{0} of the ''bare''
electron in terms of the observed values of e and m of the
''physical'' electron without any infinite parameters and by
essentially nonperturbative way; ii) to consider μmeson as
another selflocalized EPF state and to estimate the ratio
m_{μ}/m; iii) to prove that the selflocalized state is
Lorentzinvariant and its energy spectrum corresponds to the
relativistic free particle with the observed mass m; iv) to
show that the expansion in a power of the observed charge e <<
1 corresponds to the strong coupling expansion in a power of the
''primary'' charge e^{1}_{0} ~ e when the interaction between
the ``physical'' electron and the transverse electromagnetic
field is considered by means of the perturbation theory and all
terms of this series are free from the ultraviolet divergence.
Key words:
renormalization; Dirac electronpositron vacuum; nonperturbative theory.
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