Black holes are ‘portals to other universes’, according to new quantum results.
According to Albert Einstein’s theory of general relativity, black holes are uninhabitable chasms of space-time that end in a “singularity,” or a mass of infinite density. It’s a place so bleak that even the laws of physics break down there. But what if black holes aren’t so forbidding? What if they are instead some kind of intergalactic stargate, or maybe even a passageway into a whole other universe?
It may sound like the premise for a clever science-fiction movie, but new calculations by quantum physicists now suggest that the stargate idea might actually be the better theory. According to the startling new results, black holes do not culminate in a singularity. Rather, they represent “portals to other universes,” reports New Scientist
This new theory is based on a concept known as ‘loop quantum gravity’ (or LQG). It was first formulated as a way of merging standard quantum mechanics and standard general relativity, in order to remedy incompatibilities between the two fields. Basically, LQG proposes that spacetime is granular, or atomic, in nature; It is made up of miniscule, indivisible chunks about the same size as the Planck length — which roughly amounts to 10-35 meters in size.
Researchers Jorge Pullin from Lousiana State University, and Rodolfo Gambini from the University of the Republic in Montevideo, Uruguay, crunched the numbers to see what would happen inside a black hole under the parameters of LQG. What they found was far different from what happens according to general relativity alone: there was no singularity. Instead, just as the black hole began to squeeze tight, it suddenly loosened its grip again, as if a door was being opened.
It might help to conceptualize exactly what this means if you imagine yourself traveling into a black hole. Under general relativity, falling into a black hole is, in some ways, much like falling into a very deep pit that has a bottom, only instead of hitting the bottom, you get pressed into a single point — a singularity — of infinite density. With both the deep pit and the black hole, there is no “other side.” The bottom stops your fall through the pit, and the singularity “stops” your fall through the black hole (or at least, at the singularity it no longer makes sense to say you’re “falling”).
Your experience would be much different traveling into a black hole according to LQG, however. At first you might not notice the difference: gravity would increase rapidly. But just as you were nearing what ought to be the black hole’s core — just as you’re expecting to be squashed into the singularity — gravity would instead begin to decrease. It would be as if you were swallowed, only to be spit out on the other side.
Chinese physicists measure speed of Einstein’s ‘spooky action at a distance’: At least 10,000 times faster than light.
A team of Chinese physicists have clocked the speed of spooky action at a distance — the seemingly instantaneous interaction between entangled quantum particles — at more than four orders of magnitude faster than light. Their equipment and methodology doesn’t allow for an exact speed, but four orders of magnitude puts the figure at around 3 trillion meters per second.
Spooky action at a distance was a term coined by Einstein to describe how entangled quantum particles seem to interact with each other instantaneously, over any distance, breaking the speed of light and thus relativity. As of our current understanding of quantum mechanics, though, it is impossible to send data using quantum entanglement, preserving the theory of relativity. A lot of work is being done in this area, though, and some physicists believe that faster-than-light communication might be possible with some clever manipulation of entangled particles.
Now, thanks to these Chinese physicists — the same ones who broke the quantum teleportation distance record last year — we know that spooky action at a distance has a lower bound of four orders of magnitude faster than light, or around 3 trillion meters per second. We say “at least,” because the physicists do not rule out that spooky action is actually instantaneous — but their testing equipment and methodology simply doesn’t allow them to get any more accurate.
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English: Albert Einstein Français : portrait d’Albert Einstein (Photo credit: Wikipedia)
“There’s been a breakthrough in my procrastination process. My progress is proceeding at lightning speed towards its starting point.
I am to inertia what Einstein was to physics!”
I might even say that I have just invented Quantum Procrastination.
Babble (Photo credit: Wikipedia)
It is said, by some very bright minds indeed, that one particle can be in two(or more?) different places at the same time. But Ralphie does so like to be contrary!
What if I proposed that one particle can NOT be in two different places at the SAME time? What if our perception of time were flawed and this example of a particle is actually in two different places in two different timeflows?
What do we know about time anyway, really? It SEEMS to be forever going forward, but does it? Did not Einstein prove that travelling backwards in time is theoretically possible? So, what if there were two(or more) streams of time, one flowing forward and one flowing backwards?
What was the question? Who is going to prove my point?
P.S.: I’ve lost my own thread here, but it is fun to think about such things.