If you ever happen to fall through a wormhole in space, you won’t come back. It won’t snap after you. But you may have enough time to send a message to the rest of us on the other side, researchers report on Nov. 15. Physical Review D.
No one has yet seen a worm, but theoretically they could provide savings to the most remote parts of the world, or to everything else, if they exist.SN: 7/27/17). Physicists have known for a long time that one of the most common types of wormholes would be very unstable and collapse if something were to enter it. It is not clear, however, how quickly it is done, or what it means for something, or who is heading for it.
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Now, a new computer program shows how one type of wormhole responds when something goes through it.
“You build a test and send it through” in a simulated wormhole, says Ben Kain, a scientist at the College of the Holy Cross in Worcester, Mass. “You don’t necessarily try to get back because you know the wormhole is collapsing — but could a faint signal be able to get back in time before the collapse? And we found that it could.”
Previous studies of worms have concluded that cosmic journeys can potentially last for repeated trips back and forth, Kain says, as long as they are supported by an exotic form of matter known as “spirit matter.”
Theoretically, masked matter corresponds to exactly the opposite gravity of normal matter. That is, the larvae will drop the apple material from the tree branch instead of down. While Einstein’s theory of general relativity is accepted, matter is almost certainly not a mask in reality, says Kain (SN: 2/3/21).
However, Cain simulated the material traveling through the wormhole, and found that it caused the hole to expand rather than wait for it to rush.
Another story was about a common thing; which triggers a fall that presses the hole shut and leaves behind a black hole, Cain’s simulation confirmed. But it would happen to be moving slowly enough to the equivalent of a mobile speed to transmit a slight velocity signal to our side before the wormhole closes completely.
Cain doesn’t think he’d ever send people through a worm if they were found. “Just a box and a video camera. It’s all automated,” he said. It will be one trip, “but we can at least see some video of what this machine sees.”
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Physicist Sabinus Hossenfelder of the Munich Center for Mathematical Philosophy says that the idea should be approached with a good deal of skepticism. “[It] demands that it be laid [things] which we all know is not…. You can do lots of things mathematically for nothing. “
However, Kain says, there is a lot of work to be done to find ways to make worms that don’t rely on shadow matter to survive long enough to travel across the universe or beyond.
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