The photon magnetic moment has not a perpendicular component and is fully paramagnetic
High Energy Physics - Phenomenology
2010-09-02 v2
Abstract
Our paper Phys. Rev. D \textbf{79}, 093002 (2009), in which it was shown the paramagnetic behavior of photons propagating in magnetized vacuum, is criticized in Phys. Rev. D \textbf{81}, 105019, (2010) and even claimed that the photon has a diamagnetic component. Here it is shown that such criticism is inadequate and that the alleged "perpendicular component" is due to a mistake in differentiating a vanishing term with regard to the magnetic field , or either by mistaking the derivative of a scalar product as that of a dyadic product. A discussion on the physical side of the problem is also made.
Keywords
Cite
@article{arxiv.1007.4841,
title = {The photon magnetic moment has not a perpendicular component and is fully paramagnetic},
author = {H. Perez Rojas and E. Rodriguez Querts},
journal= {arXiv preprint arXiv:1007.4841},
year = {2010}
}