Spin Hall effect of Photons in a Static Gravitational Field

Pierre Gosselin (1) , Alain Bérard (2) , Herve Mohrbach (2)

1 IF - Institut Fourier
2 FCN - Fédération de Chimie de Nancy

Starting from a Hamiltonian description of the photon within the set of Bargmann-Wigner equations we derive new semiclassical equations of motion for the photon propagating in static gravitational field. These equations which are obtained in the representation diagonalizing the Hamiltonian at the order $\hbar $, present the first order corrections to the geometrical optics. The photon Hamiltonian shows a new kind of helicity-magnetotorsion coupling. However, even for a torsionless space-time, photons do not follow the usual null geodesic as a consequence of an anomalous velocity term. This term is responsible for the gravitational birefringence phenomenon: photons with distinct helicity follow different geodesics in a static gravitational field.

Mots clés: spin hall effect of light

Domaines: Physique des Hautes Energies - Théorie [hep-th]; Autre [cond-mat.other]

Pierre Gosselin, Alain Bérard, Herve Mohrbach. Spin Hall effect of Photons in a Static Gravitational Field. Physical Review D, 2007, 75, pp.084035. ⟨10.1103/PhysRevD.75.084035⟩. ⟨hal-00021931v4⟩