Radiation-induced shift of the ground-state energy of an electron in a static magnetic field in (2+1)-dimensional quantum electrodynamics

The one-loop radiation-induced shift of the ground state energy of an electron in a magnetic field has been calculated within the framework of (2+1)-dirnensional quantum electrodynamics whose Lagrangian includes a Chern-Simons term of a topological nature. The asymptotic behavior of energy shift as a function of field intensity and topological mass parameter has been examined. A comparison with the known results of (3+1)-dimensional electrodynamics has been made.