Classical solutions for the Carroll-Field-Jackiw-Proca electrodynamics

TL;DR

This paper analyzes classical solutions of the Maxwell-Carroll-Field-Jackiw-Proca electrodynamics with Lorentz-violating backgrounds, revealing distinct behaviors in electric and magnetic fields depending on the background's nature.

Contribution

It provides explicit Green functions and solutions for both timelike and spacelike Lorentz-violating backgrounds in MCFJP electrodynamics, highlighting novel oscillating and decaying field behaviors.

Findings

Electric field remains unaffected by Lorentz violation in the timelike case.

Magnetic field exhibits oscillations in the timelike case and exponential decay in the spacelike case.

Solutions recover standard Maxwell-Proca behavior in appropriate limits.

Abstract

In the present work, we investigate classical solutions of the Maxwell-Carroll-Field-Jackiw-Proca (MCFJP) electrodynamics for the cases a purely timelike and spacelike Lorentz-violating (LV) background. Starting from the MCFJP Lagrangian and the associated wave equations written for the potential four-vector, the tensor form of the Green function is achieved. In the timelike case, the components of the stationary Green function are explicitly written. The classical solutions for the electric and magnetic field strengths are then evaluated, being observed that the electric sector is not modified by the LV background, keeping the Maxwell-Proca behavior. The magnetic field associated with a charge in uniform motion presents an oscillating behavior that also provides an oscillating MCFJ solution (in the limit of a vanishing Proca mass), but does not recover the Maxwell-Proca solution in the limit of vanishing background. In the spacelike case, the stationary Green function is written and also explicitly carried out in the regime of a small background. The electric and magnetic fields reveal to possess an exponentially decaying behavior, that recover the Maxwell-Proca solutions.