Does Light have a Ground State ?

AI Thread Summary
The discussion explores whether light has a "ground state" as it gains or loses energy, affecting its oscillation rate and wavelength. It raises the question of whether, over time and with the universe's expansion, light could lose its distinct particle characteristics and merge into a homogeneous continuum. The current state of the cosmic microwave background, which is cooling below 3 Kelvin, suggests that as energy sources diminish, light could approach absolute zero. This scenario implies that light may eventually lose its integrity as distinct quanta. The conversation highlights the theoretical implications of light's behavior in an expanding universe.
Les Sleeth
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Does Light have a "Ground State"?

Light when it gains or loses energy, increases or decreases its oscillation rate, and shortens or lengthens its wave length (respectively). Do anyone find it hard to imagine just how fast and short light was circa big bang?

Is it possible, given enough time and expansion of the universe, that radiated light's oscillation rate will so slow, and its wave length will become so stretched, that light will eventually lose its integrity as distinct particles? In other words, will all previously distinct light quanta, in the end, blend into one homogeneous continuum of undifferentiated "ground state" of light?
 
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Current microwave background is at a temperature below 3o Kelvin. As time goes on, it gets lower. It might take forever, but eventually it will get to absolute 0. Also there won't be any more energy sources left.
 
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