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Pilot Wave - Walking Droplets

slo1
Posts: 4,330
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10/3/2013 1:45:29 PM
Posted: 3 years ago
http://www.newswise.com...

Newswise " WASHINGTON, D.C. Oct. 1, 2013 -- A research team led by Yves Couder at the Universit" Paris Diderot recently discovered that it"s possible to make a tiny fluid droplet levitate on the surface of a vibrating bath, walking or bouncing across, propelled by its own wave field. Surprisingly, these walking droplets exhibit certain features previously thought to be exclusive to the microscopic quantum realm.
This finding of quantum-like behavior inspired another team of researchers, at the Massachusetts Institute of Technology (MIT), to examine the dynamics of these walking droplets. They describe their findings in the journal Physics of Fluids.
"This walking droplet system represents the first realization of a pilot-wave system. Its great charm is that it can be achieved with a tabletop experiment and that the walking droplets are plainly visible," explained John Bush, professor of applied mathematics in the Department of Mathematics at MIT. "In addition to being a rich, subtle dynamical system worthy of interest in its own right, it gives us the first opportunity to view pilot-wave dynamics in action."
The dynamics of the walking droplets are reminiscent of the pilot-wave dynamics proposed by Louis de Broglie in 1926 to describe the motion of quantum particles, in which microscopic particles such as electrons move in resonance with an accompanying guiding wave. Pilot-wave theory wasn"t widely accepted and was superseded by the Copenhagen Interpretation of quantum mechanics, in which the macroscopic and microscopic worlds are philosophically distinct.


Here is the abstract
http://pof.aip.org...
slo1
Posts: 4,330
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10/3/2013 1:52:48 PM
Posted: 3 years ago
This is pretty cool. The thing to note about this is that droplet and bath are the same matter.

I'm not certain how much credence this gives to Pilot Wave theory interpretation of quantum mechanics.
chui
Posts: 507
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10/4/2013 6:15:36 AM
Posted: 3 years ago
My understanding of this is that they are hoping this will be a quantum analog system ie it is quantum like not actually quantum.
slo1
Posts: 4,330
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10/4/2013 11:53:23 AM
Posted: 3 years ago
At 10/4/2013 6:15:36 AM, chui wrote:
My understanding of this is that they are hoping this will be a quantum analog system ie it is quantum like not actually quantum.

I think that is a fair assessment, especially considering the pilot wave in this case is created from the fluid. Waive pilot theory still has to identify the nature of the wave and how it can propagate through space with an absence of other matter. (its hidden variables)

It is a great example of how wave dynamics can create the same probability distribution that is predicted by quantum mechanics. It does leave open the possibility that there is a deterministic explanation of why we see such odd behaviors.
Bullish
Posts: 3,527
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10/6/2013 3:36:06 PM
Posted: 3 years ago
Amazing. I stand in disbelief of my eyes when I saw the droplets orbiting each other and when the probability fields formed.

I need to know what kind of instrument they used to vibrate the bath.
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