Physicists have figured out how to check whether we live in a universe-hologram


22/10/2010

Signature: A physicist at the Massachusetts Institute of Technology, Sam Waldman in the laser lab, where a holographic interferometer is constructed

In 2008, astrophysicist Craig Hogan of Fermilab (National Accelerator Laboratory. Enrico Fermi), made a stunning suggestion: three-dimensional universe in which we live is a hologram.

He is currently working on creating the most accurate clock ever created to accurately calculate whether the reality surrounding us is an illusion.

The idea is that space-time has a limit beyond which they become blurred, like a digital image that is excessively increased - so-called pixelation. This idea was previously proposed by Stephen Hawking and other scientists. Possible evidence of this model, it may be an unexplained "noise" in last year GEO600 experiment in Germany, which was to search for gravitational waves from black holes. Hogan suggested that a "jitter" in the above experiment indicates that we have reached the lower limit of the pixel resolution of space-time.

Signature: The holographic interferometer was so named in honor of the instrument of the 17th century.

The name "holographic interferometer," was given to the unit of measurement of the 17th century. It was "a device for all measurements, both on the ground and in the sky." Hogan decided that it coincided with the objectives of his mission, so the device that is being developed in the laboratory Fermilab, was named so.

In the classical holographic interferometer, which was first developed in the late 17th century, a laser beam in vacuum, the mirror-reflected beam splitter is split into two parts. The two beams are moving at different angles on the two vacuum tubes, reaching mirrors and flying back to the mirror-beamsplitter.

Because the light in a vacuum is moving with constant velocity, the two beams are to arrive back to the mirror at the same time. However, their waves are synchronized in such a way that it will allow them to re-unite into a single beam. Any extraneous vibrations can change the frequency of the waves, and when they get back to the mirror-beamsplitter, they will be out of sync.

In holographic interferometer synchronization loss is expressed as a shake or vibration, which is a space-time jitter, like interference on the radio, which arise due to too low bandwidth.

Due to the measurement accuracy, the holographic interferometer need not be large. At the size of 40 meters, which is a hundred times larger than the modern interferometers, it is able to measure gravitational waves from black holes and supernovas. But as scientists face the challenge of measuring the frequency of space-time, they had to focus on creating the device, which has a very high accuracy at very small intervals of time, seven times more accurate than any existing atomic clocks.

"Trembling of the space-time occurs at a frequency of one million times per second, a thousand times faster than it is able to catch the ear" - said Fermilab physicist Aaron Chou, whose laboratory is engaged in the development of prototypes for the holographic interferometer.

The bottom line is, said Chow, to prove that the vibrations do not come from the tool. The researchers used a technology similar to that used in noise-canceling headphones: sensors placed outside the instrument will pick up vibrations and shake the mirror with exactly the same frequency to the frequency of both collided and canceled each other. If there’s anything like a small rocking, it would show blurring of space-time, which confirm the theory of the holographic universe. Visit the news portal, argue, argue, prove.


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