The Wigner rotation for photons in an arbitrary gravitational field

Details The Wigner rotation for photons in an arbitrary gravitational field The Wigner rotation for photons in an arbitrary gravitational field

2009-02-09

arxiv.org/abs/0902.1399v1

Physics

Quantum Physics

15 pages (two column), 4 figures

Scientific paper

We investigate the Wigner rotation for photons, which governs the change in the polarization of the photon as it propagates through an arbitrary gravitational field. We give explicit examples in Schwarzschild spacetime, and compare with the corresponding flat spacetime results, which by the equivalence principle, holds locally at each spacetime point. We discuss the implications of the Wigner rotation for entangled photon states in curved spacetime, and lastly develop a sufficient condition for special (Fermi-Walker) frames in which the observer would detect no Wigner rotation.

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