ar X iv : a st ro - p h / 98 12 44 4 v 1 2 4 D ec 1 99 8 Cosmological Red Shift . An Information Mechanics Perspective
نویسنده
چکیده
A photon’s observed wavelength tells an astronomical detector about the amount of position information obtained by observing that photon. This amount of position information appears to depend on time in a way which, to first order over distances small compared to the size of the universe, may account for the cosmological red shift. Interpretation of cosmological red shift as due to rapid recession of distant light sources has relied on a classical-mechanical picture (Hubble, 1936). Here, we ask about information received in detecting a photon emitted long ago and far away. Specifically, the photon’s observed wavelength tells the detector about the amount of position information accessed by such detection. This amount of position information appears to depend on time in a way which, to first order over distances small compared to the size of the universe, may account for the cosmological red shift. In information mechanics (IM) (Kantor, 1977; hereinafter cited as IM ), there is a longest possible length λ1 (IM , p.188); “radius” RU of universe U is defined as λ1/(2π) (IM , p.212). The amount of information indicated by a photon’s wavelength is λ1 divided by the photon’s wavelength (IM ; Kantor 1997). Quantum mechanics (QM) appears in restricted form as a special case in IM. The picture discussed here was reached via IM; it is expressed here using terms which may be more familiar from QM.
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