mathematical random sunday curiosity: De Sitter space
well established experimental fact discovered since the late 1990s, the universe is accelerating in its expansion this fact is tantalizing to think that universe will eventually be de Sitter as baryonic and dark matter be diluted away in the future only cosmological constant remaining, one thing i find intriguing about de Sitter space is that
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de Sitter space can be defined as a submanifold of a generalized Minkowski space
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https://en.wikipedia.org/wiki/De_Sitter_space
so what can happen in de Sitter space, one aspect of it investigated way back early 2014-15
https://www.youtube.com/watch?v=o-qqeDUU7HM
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that video explains the content of their research
https://arxiv.org/abs/1405.0298
btw, this might be helpful to someone doing qft/path integral in de Sitter space
https://arxiv.org/abs/1010.5367