I said that shorter wavelengths go missing as short paths "dissapear" from spacetime by the constraints energy density imposes, but this is a bit misleading. In fact, that some spacetime paths are unavailable would not only prevent those specific photons from forming, but alter how all other photons would develop as well.
In my view, photons are just another type of pattern interactions create, so any of their detected properties (wavelength, frequency...) are ultimately the result of the paths the instant interactions composing them trace through spacetime.
So the fact that some short spacetime paths are not available would affect the formation of all photons equally, regardless of the final frequency or wavelength we observe. Much like in the Feynman path integral formulation, the space of possibilities changes for all photons, not only for those of that specific wavelength. If there are some spacetime paths interactions can not take, this will affect the formation or "propagation" of photons of any wavelength.
The wavelengths we observe are a result of the spacetime paths interactions take. The specific wavelengths that correspond exactly to those paths that aren't available are also impossible, but all other wavelengths would get altered in some way as well.
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The "Inverse Casimir effect" I describe is not a new phenomenon, but just another name for what causes cosmological redshift: the conditioning of spacetime by the presence of energy density.
The double slit experiment, the Casimir effect, gravitational time dilation and cosmological redshift are just dramatic examples of how interactions constrain the development of other interactions by the mere fact of having existed.
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In my model, there's a certain length interactions can not exceed to comply with the universal constants (c, G and h), so the energy density in the different regions of space dictates the maximum lengths that interactions can span, defining the cosmological horizon for the observable universe, and all black hole event horizons we can observe.
So although the universe could be really infinite in age and extent, it has an average energy density that doesn't let interactions to be longer than 13.8 billion lightyears, so the 13.8 billion years we think correspond to the age of the universe could just be the longest spacetime intervals we are able to perceive.
I'll explain how the universal constants regulate the interplay between our subjective notions of space, time and density, and how these constants are just constraints that the interactions shaping all phenomena must always fulfill in my upcoming article.
