One could imagine that for a very low Unruh temperature spacetime changes the phase and becomes „solid“. A low Unruh temperature means very low acceleration/gra

One could imagine that for a very low Unruh temperature spacetime changes the phase and becomes „solid“. A low Unruh temperature means very low acceleration/gravitation. This might explain dark matter. Similar things are discussed in the literature under https://en.wikipedia.org/wiki/Superfluid_vacuum_theory https://en.wikipedia.org/wiki/Superfluid_vacuum_theory and https://penntoday.upenn.edu/news/physicist-theorizes-dark-matter-superfluid https://penntoday.upenn.edu/news/physicist-theorizes-dark-ma...