Long Range Forces from the Cosmological Neutrino Background
C. J. Horowitz, J. Pantaleone
Abstract
The cosmological neutrino background will mediate long range forces between objects. For a background of temperature T, the potential decreases as 1/r5 for r >> 1/T and as 1/r for r << 1/T. These forces have large spin-dependent components. If the neutrino background is nonrelativistic, the long range forces are enhanced by a factor of the inverse neutrino velocity. These long range forces may provide a method for observing the cosmological neutrino background.
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