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LCSphysicist
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- TL;DR Summary
- I was reading a book about cosmology, from Andrew Liddle, where in the chapter 5 he start to talk about implications of the differentes signs possible to k (k from the Friedmann equation). It is said, until this chapter, that the implication of k>0 inevitably implies a stop in the Universe expansion, and eventually a Universe's contraction. But, as far as i know, the Big Crunch was already discarded, so it is the same to say that k can not be greater than 0?
In another words, to discard the Big Crunch, we discard the spherical universe hypothesis too?
k>0 able us to find a solution for a dot = 0
k>0 able us to find a solution for a dot = 0