Sunday, December 6, 2015

No evidence that we live in a hologram

One of the biggest advance in theoretical physics of the last 30 years is supposed to be the holographic principle, but I did not know that anyone was foolish enuf to believe that it is testable. Jennifer Ouellette (Mrs. Sean M. Carroll) writes:
A controversial experiment at Fermilab designed to hunt for signs that our universe may really be a hologram has failed to find the evidence it was seeking, the laboratory has announced.

It’s called the Holometer (short for “Holographic Interferometer”), and it’s the brainchild of Fermilab physicist Craig Hogan. He dreamed up the idea in 2009 as a way to test the so-called holographic principle.

Back in the 1970s, a physicist named Jacob Bekenstein showed that the information about a black hole’s interior is encoded on its two-dimensional surface area (the “boundary”) rather than within its three-dimensional volume (the “bulk”). Twenty years later, Leonard Susskind and Gerard ‘t Hooft extended this notion to the entire universe, likening it to a hologram: our three-dimensional universe in all its glory emerges from a two-dimensional “source code.” New York Times reporter Dennis Overbye has likened the holographic concept to a can of soup. All the “stuff” of the universe, including human beings, makes up the “soup” inside the can, but all the information describing that stuff is inscribed on the label on the outside boundary. ...

The holographic principle has since become one of the most influential ideas in theoretical physics, yet many believe it to be untestable, at least for now. (It would require probing black holes up-close, a daunting prospect even if we had the technology to do so.) Hogan decided to try anyway.
I don't want to blame someone for doing an experiment, but was this stuff ever meant to be taken seriously?

The holographic principle is just some silly conjectural mathematical property of some theories that have some hypothetical relation to black hole boundaries, but no real relation to the real world.

1 comment:

  1. Roger,

    Yes, if you consider QM---what the mainstream QM says about it, anyway.