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"A synthetic magnetic field is an artificial field that leads to particle dynamics equivalent to those of an electric charge in a corresponding natural magnetic field."
The top row shows the scientists' experimental results. The bottom row shows their mathematical predictions. The close similarity between the two suggests that a monopole was formed. The vortex can be seen as the dark spot in the center of the condensate.
Just? What does that mean?
Eighty years after they were first theorized, scientists have just created an artificial magnetic monopole.
Perhaps there are some slight differences in the latest experiment but magnetic monopole quasiparticles in Bose-Einstein condensates are not new.
Descripción: We propose that a charged two-condensate Bose system possesses point-like topological defects which can be interpreted as magnetic monopoles.
It suggests that the scientists got what they were trying to get; a synthetic magnetic monopole. It is indeed a monopole but it is not a magnetic monopole because it does not have a magnetic field. There's a difference and I'm pretty sure there would a lot more hubbub about it if it were a true magnetic monopole.
This part of the article suggests that they have created something very close to the real thing:
Researchers have created and photographed synthetic magnetic monopoles under lab conditions. The development lays the foundation for the underlying structure of the natural magnetic monopole – the detection of which would be a revolutionary event comparable to the discovery of the electron.
"The creation of a synthetic magnetic monopole should provide us with unprecedented insight into aspects of the natural monopole," says Prof. David S. Hall from Amherst College, USA. "It's not every day that you get to poke and prod the analogue of an elusive fundamental particle under highly controlled conditions in the laboratory," he continues.
It's a quantum thing. It works because temperatures are an average. In a Bose-Einstein condensate, some atoms reach those very low temperatures but the average temperture is something higher. It's those really cold atoms that are of interest.
I was not aware that we were capable of 0 deg kelvin how exactly does that work.
Right. It's because at those low temperatures things get weird due to what is know as macroscopic quantum phenomena. For example:
They go on to say that at that temp things start acting unlike solids liquids or gasses, I don't think I quite understand that either.
The cooling is to induce superconductivity not to reduce friction. It allows magnetic levitation.
In regards to magnets I understood that with bullet train levitation they used super cold "rails" is this because they are actually lowering the fluid friction by doing so?
reply to post by ImaFungi
At its basic level the concept is that, as with electrical charges, there is a magnetic "charge" and that a particle can carry that "charge" similar to the way an electron or proton can.
As to how...sorry, the math goes way beyond me. But the matter is far from settled as to whether magnetic monopoles actually can exist.
edit on 2/1/2014 by Phage because: (no reason given)