  We show that in the presence of a slowly rotating strong transverse magnetic
field there is an infinite spectrum of harmonic wave functions $A_n$ due to the
first order QED correction (in $\alpha^2$) given by the Euler-Heisenberg
Lagrangian. The frequency shifts are integer multiples $\pm \omega_0 n$ of the
magnetic field angular frequency rotation $\omega_0=2\pi\nu_m$ and the several
modes $n$ are coupled to the nearest harmonics $n\pm 1$. This is a new effect
due to QED vacuum fluctuations, not exploit before, that can explain, both
qualitatively and quantatively, the recent experimental results of the PVLAS
collaboration without the need of a low mass intermediate particle, hence
dismiss the recent claim of the discovery of the axion. [Erratum: The PVLAS
signal cannot be explained by this mechanism.]
