Sadly, the connecting wormhole could not be used for communication, at least not in the traditional sense. The only way to communicate with a buddy at the other end of the wormhole is "if you jump into your black hole, then the other person must jump into his black hole, and the interior world would be the same," said physicist Andreas Karch, of the University of Washington.
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But using two black holes and a wormhole as a superluminal telegraph system isn't the point of this exercise.
The key thing to come out of these calculations is that the black holes, regardless of their size, will remain entangled, just like the entangled particles of the quantum world. In this case, any change to one black hole will be communicated instantaneously to the other black hole through the wormhole. Therefore, the wormhole, a construct born from general relativity, is acting in a very quantum manner.
The upshot is that "two different mathematical machineries" have been used "to go after the same physical process," said Karch.