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Environment & Science
Wed April 16, 2014
An MSU physicist believes he has solved the "black hole information paradox"
Ever since Stephen Hawking came out with his theory about how black holes work, physicists – including Hawking himself – have been wrestling with a "hole" in that theory.
Hawking postulated that if you threw something like a chair into a black hole, given enough time that chair would "dematerialize." It would disappear, leaving no trace of its existence.
But the laws of physics don't allow for things to simply disappear. Things can change, or be altered, but they can't disappear. You can burn a piece of paper, and it's no longer there, but the carbon, water, and other molecules still exist somewhere. Again, it can't simply disappear.
It's called the black hole information paradox.
PBS' Kate Becker quoted Stanford physicist Leonard Susskind in describing Hawking's theory in her post "Do Black Holes Destroy Information?":
As Leonard Susskind wrote in “The Black Hole War,” his 2008 book on the problem of black holes and information loss, “The possibility of hiding information in a vault would hardly be a cause for alarm, but what if when the door was shut, the vault evaporated right in front of your eyes? That’s exactly what Hawking predicted would happen to the black hole.”
Now comes a theoretical physicist and computational biologist from Michigan State University who believes he has solved Hawking's black hole information paradox.
Chris Adami joined us today on Stateside. (You can listen to how he explains his theory above.)
Hawking discovered that black holes emit a glow called the “Hawking radiation.” That radiation, Hawking theorized, consumes the black hole and all things in the hole are lost. Poof! Nothing left.
Adami theorizes that a copy of the chair is made before it goes into the black hole.
More on Adami’s solution from MSU:
The solution, Adami says, is that the information is contained in the stimulated emission of radiation, which must accompany the Hawking radiation – the glow that makes a black hole not so black. Stimulated emission makes the black hole glow in the information that it swallowed.
“Stimulated emission is the physical process behind LASERS (Light Amplification by Stimulated Emission of Radiation). Basically, it works like a copy machine: you throw something into the machine, and two identical somethings come out.
“If you throw information at a black hole, just before it is swallowed, the black hole first makes a copy that is left outside. This copying mechanism was discovered by Albert Einstein in 1917, and without it, physics cannot be consistent,” Adami said.
Here’s a video of Adami explaining the theory:
*This post has been updated.
The Environment Report