Anomalous geometric spin Hall effect of light
Abstract
The geometric spin Hall effect of light (GSHEL), similar to the spin Hall effect of light, is also a spindependent shift in the centroid of light intensity (energy flux), but it is a purely geometric effect and independent of the lightmatter interaction. In this paper, we discuss the GSHEL with respect to momentum flux instead of energy flux. Interestingly, for the symmetric energymomentum (EM) tensor, its centroid shift of momentum flux is double that of the energy flux; however, for the canonical EM tensor, its centroid shift of momentum flux agrees with that of the energy flux. Furthermore, when considering the effect produced by orbital angular momentum, for these two conventional EM tensors the centroid shifts of the momentum fluxes are twice those of the energy fluxes. To tell which EM tensor of the electromagnetic field would be more "correct," we propose a possible experimental scheme to test the GSHEL of momentum flux through the mechanical effect of light.
 Publication:

Physical Review A
 Pub Date:
 June 2019
 DOI:
 10.1103/PhysRevA.99.063832
 arXiv:
 arXiv:1804.09013
 Bibcode:
 2019PhRvA..99f3832W
 Keywords:

 Physics  Optics
 EPrint:
 5pages, 2 figures