Why Are Physicists Interested in AdS Black Holes Over de Sitter Black Holes?

supakorn
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Why the physicists studying a "AdS black hole"?

what is the meaning of AdS (Anti de Sitter) for black hole? and why not we study de Sitter black hole?
 
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AdS space is important for the conjectured duality between superstrings in AdS space and a certain quantum field theory on the boundary of AdS space. At finite temperature, there is a black hole in AdS space (in other words, it is only asymptotically AdS). The conjecture goes by the name of AdS/CFT or gauge/gravity or gauge/string duality.
 
thank you so much
 

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