Dynamical mass generation in 2+1-dimensional electrodynamics in an external magnetic field
A. V. Shpagin
Abstract
The influence of a magnetic field on the mass generation in 2+1 dimensional QED is considered.It is shown that the magnetic field is a catalyst of the generation of a fermion dynamical mass. The mass arises in the system with arbitrary number of fermions, not only with N≤ 4, as it is in the system without the magnetic field. The polarization tensor is calculated for a constant magnetic field.
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