Magnetoelectric boundary simulated by a ChernSimonslike model
Abstract
In this work we study some physical phenomena that emerge in the vicinity of a magnetoelectric boundary. For simplicity, we restrict to the case of a planar boundary described by a coupling between the gauge field with a planar external ChernSimonslike potential. The results are obtained exactly. We compute the correction undergone by the photon propagator due to the presence of the ChernSimons coupling and we investigate the interaction between a stationary pointlike charge and the magnetoelectric boundary. In the limit of a perfect mirror, where the coupling constant between the field and the potential diverges, we recover the image method. For a non perfect mirror, we show that we have an attenuated image charge and, in addition, an image magnetic monopole whose field strength does not exhibit the presence of the undesirable and artificial divergences introduced by Dirac strings. We also study the interaction between the plate and a quantum particle with spin. In this case we have a kind of chargemagnetic dipole interaction due to the magnetoelectric properties of the plate.
 Publication:

European Physical Journal C
 Pub Date:
 June 2021
 DOI:
 10.1140/epjc/s10052021093566
 arXiv:
 arXiv:2201.00926
 Bibcode:
 2021EPJC...81..558O
 Keywords:

 High Energy Physics  Theory;
 Condensed Matter  Materials Science;
 Physics  Optics
 EPrint:
 3 figures, 13 latex pages