Traveling Waves in the Euler-Heisenberg Electrodynamics

Abstract

We examine the possibility of travelling wave solutions within the nonlinear Euler-Heisenberg electrodynamics. Since this theory resembles in its form the electrodynamics in matter, it is a priori not clear if there exist travelling wave solutions with a new dispersion relation for $\omega (k)$ or if the Euler-Heisenberg theory stringently imposes $\omega =k$ for any arbitrary ansatz $\mathbf{E}(\xi )$ and $\mathbf{B}(\xi )$ with $\xi \equiv \mathbf{k}\cdot \mathbf{r}-\omega t$. We show that the latter scheme applies for the Euler-Heisenberg theory, but point out the possibility of new solutions with $\omega \ne k$ if we go beyond the Euler-Heisenberg theory, allowing strong fields. In case of the Euler-Heisenberg theory the quantum mechanical effect of the travelling wave solutions remains in $\hslash$ corrections to the energy density and the Poynting vector.

arXiv comment26 pages

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