Re: [問題] 任何訊號是否有可能穿越事件地平線?
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首先要判斷一個時空是真的singularity或是可以藉由座標判斷來知道是否不是
真的singularity,我所知道是目前沒有人會解決這個數學難題(如果有請版友解釋一下)
再來是後來想想,因為我曾經念過一點AdS/CFT,稍微知道一些黑洞物理
我認為要衝進去黑洞的視界好像是不符合物理,黑洞表面其實有一堆非常奇異的性質
比如t'Hooft提出的Brick Walls模型
Brick Walls for Black Holes in AdS/CFT
http://arxiv.org/abs/1307.5933
這讓我想起當初愛因斯坦對宇宙是加速膨脹這件事情他對Lemaître說過一句話
你的計算是對的,但是你的物理是糟透的的
後來Lemaître和Hubble請他去天文台上看宇宙,愛因斯坦才承認他錯了
不過這裡討論比較詭異的是,這些東西完全沒有實驗證據,雖然我相信黑洞是存在的
其他的我在想想看
At this time, Einstein, while not taking exception to the mathematics of
Lemaître's theory, refused to accept the idea of an expanding universe;
Lemaître recalled him commenting
"Vos calculs sont corrects, mais votre physique est abominable"[13]
("Your calculations are correct, but your physics is atrocious.")
http://en.wikipedia.org/wiki/Georges_Lema%C3%AEtre
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