Cosmological Searches for Photon Velocity Oscillations

Details Cosmological Searches for Photon Velocity Oscillations Cosmological Searches for Photon Velocity Oscillations

1998-03-17

arxiv.org/abs/astro-ph/9803202v1

Phys.Lett. B430 (1998) 54-56

Astronomy and Astrophysics

Astrophysics

4 pages, TEX with harvmac macros

Scientific paper

10.1016/S0370-2693(98)00482-1

We posit a second massless photon, uncoupled to known forms of matter but undergoing Lorentz non-invariant velocity mixing with ordinary photons. Our speculation within a speculation suffers from the sin of implausibility but enjoys the virtue of verifiability. To avoid unacceptable distortion of the well-measured microwave background spectrum, the velocity difference of the photons cannot exceed $\sim10^{-32} c$. Stronger constraints (or observable effects!) can arise from optical measurements of distant sources.

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