One considers a planar Maxwell-Chern-Simons electrodynamics in the presence of a purely spacelike Lorentz-violating background. Once the Dirac sector is properly introduced and coupled to the scalar and the gauge fields, the electron-electron interaction is evaluated as the Fourier transform of the Möller scattering amplitude (derived in the nonrelativistic limit). The associated Fourier integrations can not be exactly carried out, but the interaction potential is obtained as a first order solution in ${\mathrm{v}}^2/s^2$. It is then observed that the scalar potential presents a logarithmic attractive (repulsive) behavior near (far from) the origin. Concerning the gauge potential, it is composed of the pure MCS interaction corrected by background contributions, also responsible for its anisotropic character. It is also verified that such corrections may turn the gauge potential attractive for some parameter values. Such attractiveness remains even in the presence of the centrifugal barrier and gauge invariant $A·A$ term, which constitutes a necessary condition for yielding electron-electron pairing.

• Received 4 October 2004

DOI:https://doi.org/10.1103/PhysRevD.71.045003