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Ande-Sitter Spacetime

by Imparcticle
Tags: andesitter, spacetime
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Imparcticle
#1
May17-04, 04:56 PM
P: 566
From what I have gathered from another thread, the Ande-Sitter Spacetime incorperates a negative cosmological constant. Then the universe would constantly be contracting. I am sure I am missing something here. Does the Ande-Siter spacetime incorperate a static universe as well?
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Olias
#2
May17-04, 06:02 PM
P: 258
Quote Quote by Imparcticle
From what I have gathered from another thread, the Ande-Sitter Spacetime incorperates a negative cosmological constant. Then the universe would constantly be contracting. I am sure I am missing something here. Does the Ande-Siter spacetime incorperate a static universe as well?
One can say a lot, for instance if the Universe is constantly Contracting, then it would have a no-boundery(because the boundery would forever be expanding away).

But here is Ed Witten's thoughts link:http://online.itp.ucsb.edu/online/st...ten/oh/04.html

I believe this is an original paper of above:http://www.worldscinet.com/ijmpa/16/...X01004451.html
skowalcz
#3
May18-04, 08:08 AM
P: 30
I never heard of Ande-Sitter Spacetime. I guess you mean anti-de Sitter spacetime (AdS). .
It is an empty universe with negative cosmological constant.
AdS spaces are the most symmetric solutions of the Einstein equations (with lambda<0).


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