New law implies thermodynamic time runs backwards inside black holes

[Plankton]

Ich haue ja immer wieder gerne den Satz raus: Ein SL "verbindet" sich mit dem "Anfang" unseres Universum....
Eine interessante Meldung:

New Area Law in General Relativity
... "Holographic screens are in a sense a local boundary to regions of strong gravitational fields," Engelhardt said. "Future holographic screens correspond to gravitational fields which pull matter together (e.g., black hole, big crunch), whereas past holographic screens correspond to regions which spread matter out (e.g., big bang, white hole)."

The new area law states that the area of a future holographic screen is always increasing in one direction, while the area of a past holographic screen is always increasing in a second (different) direction. This law has some intriguing interpretations when viewed from a thermodynamic perspective and using the idea that spacetime is a hologram. According to the holographic principle, the amount of information or entropy in a given area is related to the surface area. So by interpreting the area as a bound on the entropy, the area law can reveal the direction of thermodynamic time (which, as the scientists note, is not the same as mathematical time).

Because the area of future and past holographic screens increases in different directions, the direction of time is different for the two types of screens. In past screens, time moves forward. Expanding universes, such as ours, involve past holographic screens, and so we naturally perceive thermodynamic time as running forward. In contrast, time runs backward in future holographic screens. In a sense, this interpretation has the odd result that thermodynamic time runs backward inside black holes and collapsing universes.
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Mal sehen, hört man sicher noch mal was.

"Our area law holds in the absence of quantum effects, and we hope in the future to prove a more generalized area law which will hold more generally in the presence of certain quantum effects," Engelhardt said.

Read more at: http://phys.org/news/2015-09-law-imp...holes.html#jCp