Coulomb potential in Podolsky-Carroll-Field-Jackiw electrodynamics

• Podolsky electrodynamics; • Modified photon dispersion relation; • Carroll-Field-Jackiw term; • Photon propagator; • Möller scattering; • Interaction potential Podolsky electrodynamics, a higher-derivative extension of Maxwell’s theory characterized by the Podolsky parameter λ = 1 / m , which modifies the photon dispersion relation and regularizes short-distance divergences, is investigated. This framework is then coupled to the Carroll-Field-Jackiw (CFJ) model, in which a Lorentz-violating background four-vector is introduced. Within this extended electrodynamics, the photon propagator is obtained in the combined Podolsky-CFJ framework and subsequently applied to Møller scattering. It is shown that the CFJ contribution can reintroduce the short-distance divergence suppressed by Podolsky’s term. In the nonrelativistic limit, both the spatial component–which introduces a preferred direction in space and thus breaks isotropy–and the timelike component–which directly affects the dispersion relation–contribute nontrivially to the interaction potential.