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/sci/ Science & Math

Threads added between 2014/01/24 10:00 and 2014/01/24 16:00

235 more posts in this thread. [Missing image file: 1373457598630.png]
Which study is harder? Maths or Physics?
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Can we have a thread to talk about advanced math?
12 more posts in this thread. [Missing image file: Stephen_Hawking_050506.jpg]
On wednesday, Stephen Hawkin released a new description of black holes which simply removes the need for singularities and event horizons. "The absence of event horizons mean that there are no black holes - in the sense of regimes from which light can't escape to in nity. There are however apparent horizons which persist for a period of time. This suggests that black holes should be rede ned as metastable bound states of the gravitational eld. It will also mean that the CFT on the boundary of anti deSitter space will be dual to the whole anti deSitter space, and not merely the region outside the horizon. The no hair theorems imply that in a gravitational collapse the space outside the event horizon will approach the metric of a Kerr solution. However inside the event horizon, the metric and matter elds will be classically chaotic. It is the approximation of this chaotic metric by a smooth Kerr metric that is responsible for the information loss in gravitational collapse. The chaotic collapsed object will radiate deterministically but chaotically" http://arxiv.org/abs/1401.5761






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